1002551660 has 24 divisors (see below), whose sum is σ = 2296755216. Its totient is φ = 364564160.

The previous prime is 1002551651. The next prime is 1002551677. The reversal of 1002551660 is 661552001.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2278307 + ... + 2278746.

It is an arithmetic number, because the mean of its divisors is an integer number (95698134).

Almost surely, 2^1002551660 is an apocalyptic number.

1002551660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002551660 is an abundant number, since it is smaller than the sum of its proper divisors (1294203556).

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

1002551660 is a wasteful number, since it uses less digits than its factorization.

1002551660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557073 (or 4557071 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1002551660 is about 31663.0961846753. The cubic root of 1002551660 is about 1000.8498309162.

The spelling of 1002551660 in words is "one billion, two million, five hundred fifty-one thousand, six hundred sixty".