1016554640 has 40 divisors (see below), whose sum is σ = 2365969848. Its totient is φ = 406195200.

The previous prime is 1016554571. The next prime is 1016554703. The reversal of 1016554640 is 464556101.

It can be written as a sum of positive squares in 4 ways, for example, as 274101136 + 742453504 = 16556^2 + 27248^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1016554640² = 2066766672211059200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1016554597 and 1016554606.

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, 76490 + ... + 88790.

Almost surely, 2^1016554640 is an apocalyptic number.

1016554640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1016554640 is an abundant number, since it is smaller than the sum of its proper divisors (1349415208).

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

1016554640 is a wasteful number, since it uses less digits than its factorization.

1016554640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13347 (or 13341 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1016554640 is about 31883.4540161508. The cubic root of 1016554640 is about 1005.4880396567.

The spelling of 1016554640 in words is "one billion, sixteen million, five hundred fifty-four thousand, six hundred forty".