1394553672 has 108 divisors (see below), whose sum is σ = 3946191795. Its totient is φ = 461999376.

The previous prime is 1394553661. The next prime is 1394553689. The reversal of 1394553672 is 2763554931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1394553672 is a `hidden beast` number, since 1 + 3 + 9 + 45 + 536 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 697276836 + 697276836 = 26406^2 + 26406^2 .

It is a tau number, because it is divible by the number of its divisors (108).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=26406.

Its product of digits (680400) is a multiple of the sum of its prime divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8555463 + ... + 8555625.

Almost surely, 2^1394553672 is an apocalyptic number.

1394553672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1394553672

1394553672 is an abundant number, since it is smaller than the sum of its proper divisors (2551638123).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1394553672 is an frugal number, since it uses more digits than its factorization.

1394553672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 168 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 1394553672 is about 37343.7233280239. The cubic root of 1394553672 is about 1117.2364028514.

The spelling of 1394553672 in words is "one billion, three hundred ninety-four million, five hundred fifty-three thousand, six hundred seventy-two".