1216045010 has 16 divisors (see below), whose sum is σ = 2193678936. Its totient is φ = 485351808.

The previous prime is 1216045009. The next prime is 1216045027. The reversal of 1216045010 is 105406121.

It can be written as a sum of positive squares in 4 ways, for example, as 893950201 + 322094809 = 29899^2 + 17947^2 .

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, 128477 + ... + 137616.

Almost surely, 2^1216045010 is an apocalyptic number.

1216045010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216045010 is a deficient number, since it is larger than the sum of its proper divisors (977633926).

1216045010 is a wasteful number, since it uses less digits than its factorization.

1216045010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266557.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1216045010 is about 34871.8369174897. The cubic root of 1216045010 is about 1067.3738287077.

The spelling of 1216045010 in words is "one billion, two hundred sixteen million, forty-five thousand, ten".