1898916655 has 32 divisors (see below), whose sum is σ = 2354075136. Its totient is φ = 1470000000.

The previous prime is 1898916631. The next prime is 1898916659. The reversal of 1898916655 is 5566198981.

It is not a de Polignac number, because 1898916655 - 2⁷ = 1898916527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1898916655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898916659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7565280 + ... + 7565530.

It is an arithmetic number, because the mean of its divisors is an integer number (73564848).

Almost surely, 2^1898916655 is an apocalyptic number.

1898916655 is a deficient number, since it is larger than the sum of its proper divisors (455158481).

1898916655 is a wasteful number, since it uses less digits than its factorization.

1898916655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 4665600, while the sum is 58.

The square root of 1898916655 is about 43576.5608441052. The cubic root of 1898916655 is about 1238.3268830672.

The spelling of 1898916655 in words is "one billion, eight hundred ninety-eight million, nine hundred sixteen thousand, six hundred fifty-five".