1669994998 has 16 divisors (see below), whose sum is σ = 2865037824. Its totient is φ = 715164840.

The previous prime is 1669994959. The next prime is 1669995001. The reversal of 1669994998 is 8994999661.

It is a congruent number.

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, 26368 + ... + 63523.

It is an arithmetic number, because the mean of its divisors is an integer number (179064864).

Almost surely, 2^1669994998 is an apocalyptic number.

1669994998 is a deficient number, since it is larger than the sum of its proper divisors (1195042826).

1669994998 is a wasteful number, since it uses less digits than its factorization.

1669994998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91227.

The product of its digits is 68024448, while the sum is 70.

The square root of 1669994998 is about 40865.5722827908. The cubic root of 1669994998 is about 1186.4198113409.

The spelling of 1669994998 in words is "one billion, six hundred sixty-nine million, nine hundred ninety-four thousand, nine hundred ninety-eight".