1699981902 has 12 divisors (see below), whose sum is σ = 3683294160. Its totient is φ = 566660628.

The previous prime is 1699981873. The next prime is 1699981903. The reversal of 1699981902 is 2091899961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1699981903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47221702 + ... + 47221737.

It is an arithmetic number, because the mean of its divisors is an integer number (306941180).

Almost surely, 2^1699981902 is an apocalyptic number.

1699981902 is an abundant number, since it is smaller than the sum of its proper divisors (1983312258).

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

1699981902 is a wasteful number, since it uses less digits than its factorization.

1699981902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94443447 (or 94443444 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The square root of 1699981902 is about 41230.8367851054. The cubic root of 1699981902 is about 1193.4789566851.

The spelling of 1699981902 in words is "one billion, six hundred ninety-nine million, nine hundred eighty-one thousand, nine hundred two".