1662890404 has 12 divisors (see below), whose sum is σ = 3325780864. Its totient is φ = 712667304.

The previous prime is 1662890381. The next prime is 1662890413. The reversal of 1662890404 is 4040982661.

1662890404 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29694444 + ... + 29694499.

Almost surely, 2^1662890404 is an apocalyptic number.

1662890404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1662890404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1662890404 is a wasteful number, since it uses less digits than its factorization.

1662890404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59388954 (or 59388952 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1662890404 is about 40778.5532357390. The cubic root of 1662890404 is about 1184.7349734596.

The spelling of 1662890404 in words is "one billion, six hundred sixty-two million, eight hundred ninety thousand, four hundred four".