1690141872 has 20 divisors (see below), whose sum is σ = 4366199960. Its totient is φ = 563380608.

The previous prime is 1690141841. The next prime is 1690141889. The reversal of 1690141872 is 2781410961.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1690141872.

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, 17605597 + ... + 17605692.

It is an arithmetic number, because the mean of its divisors is an integer number (218309998).

Almost surely, 2^1690141872 is an apocalyptic number.

1690141872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1690141872 is an abundant number, since it is smaller than the sum of its proper divisors (2676058088).

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

1690141872 is a wasteful number, since it uses less digits than its factorization.

1690141872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35211300 (or 35211294 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1690141872 is about 41111.3350792698. The cubic root of 1690141872 is about 1191.1717554651.

The spelling of 1690141872 in words is "one billion, six hundred ninety million, one hundred forty-one thousand, eight hundred seventy-two".