1597470864 has 160 divisors (see below), whose sum is σ = 4660951680. Its totient is φ = 467251200.

The previous prime is 1597470863. The next prime is 1597470881. The reversal of 1597470864 is 4680747951.

1597470864 = 6222² + 6223² + ... + 6262².

It is a super-2 number, since 2×1597470864² = 5103826322657812992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1597470863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2359294 + ... + 2359970.

It is an arithmetic number, because the mean of its divisors is an integer number (29130948).

Almost surely, 2^1597470864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1597470864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2330475840).

1597470864 is an abundant number, since it is smaller than the sum of its proper divisors (3063480816).

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

1597470864 is a wasteful number, since it uses less digits than its factorization.

1597470864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The square root of 1597470864 is about 39968.3732968956. The cubic root of 1597470864 is about 1168.9905004078.

The spelling of 1597470864 in words is "one billion, five hundred ninety-seven million, four hundred seventy thousand, eight hundred sixty-four".