1394886520 has 128 divisors (see below), whose sum is σ = 3473280000. Its totient is φ = 501811200.

The previous prime is 1394886511. The next prime is 1394886523. The reversal of 1394886520 is 256884931.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394886523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3478320 + ... + 3478720.

It is an arithmetic number, because the mean of its divisors is an integer number (27135000).

Almost surely, 2^1394886520 is an apocalyptic number.

1394886520 is a gapful number since it is divisible by the number (10) 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 1394886520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736640000).

1394886520 is an abundant number, since it is smaller than the sum of its proper divisors (2078393480).

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

1394886520 is a wasteful number, since it uses less digits than its factorization.

1394886520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 1394886520 is about 37348.1796075793. The cubic root of 1394886520 is about 1117.3252820218.

The spelling of 1394886520 in words is "one billion, three hundred ninety-four million, eight hundred eighty-six thousand, five hundred twenty".