1897547132 has 24 divisors (see below), whose sum is σ = 3604317696. Its totient is φ = 868891968.

The previous prime is 1897547083. The next prime is 1897547137. The reversal of 1897547132 is 2317457981.

It is a super-2 number, since 2×1897547132² = 7201370236322850848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897547137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137063 + ... + 150270.

It is an arithmetic number, because the mean of its divisors is an integer number (150179904).

Almost surely, 2^1897547132 is an apocalyptic number.

It is an amenable number.

1897547132 is a deficient number, since it is larger than the sum of its proper divisors (1706770564).

1897547132 is a wasteful number, since it uses less digits than its factorization.

1897547132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287477 (or 287475 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 1897547132 is about 43560.8440230444. The cubic root of 1897547132 is about 1238.0291124036.

The spelling of 1897547132 in words is "one billion, eight hundred ninety-seven million, five hundred forty-seven thousand, one hundred thirty-two".