1689880374 has 64 divisors (see below), whose sum is σ = 4621908480. Its totient is φ = 445681440.

The previous prime is 1689880369. The next prime is 1689880429. The reversal of 1689880374 is 4730889861.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1689880374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167032 + ... + 176859.

It is an arithmetic number, because the mean of its divisors is an integer number (72217320).

Almost surely, 2^1689880374 is an apocalyptic number.

1689880374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1689880374 is an abundant number, since it is smaller than the sum of its proper divisors (2932028106).

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

1689880374 is a wasteful number, since it uses less digits than its factorization.

1689880374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343922 (or 343916 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 1689880374 is about 41108.1545924893. The cubic root of 1689880374 is about 1191.1103197748.

The spelling of 1689880374 in words is "one billion, six hundred eighty-nine million, eight hundred eighty thousand, three hundred seventy-four".