1055187664 has 40 divisors (see below), whose sum is σ = 2097515552. Its totient is φ = 513959040.

The previous prime is 1055187613. The next prime is 1055187673. The reversal of 1055187664 is 4667815501.

It is a super-2 number, since 2×1055187664² = 2226842012515553792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 1055187664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287827 + ... + 291469.

Almost surely, 2^1055187664 is an apocalyptic number.

It is an amenable number.

1055187664 is a deficient number, since it is larger than the sum of its proper divisors (1042327888).

1055187664 is a wasteful number, since it uses less digits than its factorization.

1055187664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115 (or 4109 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 1055187664 is about 32483.6522577126. The cubic root of 1055187664 is about 1018.0674879317.

The spelling of 1055187664 in words is "one billion, fifty-five million, one hundred eighty-seven thousand, six hundred sixty-four".