1394747536 has 120 divisors (see below), whose sum is σ = 3453540864. Its totient is φ = 533744640.

The previous prime is 1394747399. The next prime is 1394747537. The reversal of 1394747536 is 6357474931.

It is a happy number.

Its product of digits (1905120) is a multiple of the sum of its prime divisors (2430).

It is a self number, because there is not a number n which added to its sum of digits gives 1394747536.

It is not an unprimeable number, because it can be changed into a prime (1394747537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585580 + ... + 587956.

Almost surely, 2^1394747536 is an apocalyptic number.

1394747536 is a gapful number since it is divisible by the number (16) 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 1394747536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1726770432).

1394747536 is an abundant number, since it is smaller than the sum of its proper divisors (2058793328).

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

1394747536 is a wasteful number, since it uses less digits than its factorization.

1394747536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449 (or 2430 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 49.

The square root of 1394747536 is about 37346.3189082940. The cubic root of 1394747536 is about 1117.2881713578.

The spelling of 1394747536 in words is "one billion, three hundred ninety-four million, seven hundred forty-seven thousand, five hundred thirty-six".