1013897472 has 144 divisors (see below), whose sum is σ = 3113093760. Its totient is φ = 286949376.

The previous prime is 1013897471. The next prime is 1013897483. The reversal of 1013897472 is 2747983101.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1013897471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606654 + ... + 608322.

Almost surely, 2^1013897472 is an apocalyptic number.

1013897472 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 1013897472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556546880).

1013897472 is an abundant number, since it is smaller than the sum of its proper divisors (2099196288).

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

1013897472 is a wasteful number, since it uses less digits than its factorization.

1013897472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1013897472 is about 31841.7567354567. The cubic root of 1013897472 is about 1004.6111948658.

The spelling of 1013897472 in words is "one billion, thirteen million, eight hundred ninety-seven thousand, four hundred seventy-two".