1690849748 has 24 divisors (see below), whose sum is σ = 3559684800. Its totient is φ = 686510208.

The previous prime is 1690849723. The next prime is 1690849759. The reversal of 1690849748 is 8479480961.

It is a junction number, because it is equal to n+sod(n) for n = 1690849693 and 1690849702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588613 + ... + 1589676.

It is an arithmetic number, because the mean of its divisors is an integer number (148320200).

Almost surely, 2^1690849748 is an apocalyptic number.

It is an amenable number.

1690849748 is an abundant number, since it is smaller than the sum of its proper divisors (1868835052).

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

1690849748 is a wasteful number, since it uses less digits than its factorization.

1690849748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178319 (or 3178317 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 1690849748 is about 41119.9434338132. The cubic root of 1690849748 is about 1191.3380303048.

The spelling of 1690849748 in words is "one billion, six hundred ninety million, eight hundred forty-nine thousand, seven hundred forty-eight".