1659399370 has 32 divisors (see below), whose sum is σ = 3022790400. Its totient is φ = 655812096.

The previous prime is 1659399337. The next prime is 1659399373. The reversal of 1659399370 is 739939561.

It is not an unprimeable number, because it can be changed into a prime (1659399373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 812811 + ... + 814849.

It is an arithmetic number, because the mean of its divisors is an integer number (94462200).

Almost surely, 2^1659399370 is an apocalyptic number.

1659399370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1659399370 is a deficient number, since it is larger than the sum of its proper divisors (1363391030).

1659399370 is a wasteful number, since it uses less digits than its factorization.

1659399370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 1377810, while the sum is 52.

The square root of 1659399370 is about 40735.7259662817. The cubic root of 1659399370 is about 1183.9053241233.

The spelling of 1659399370 in words is "one billion, six hundred fifty-nine million, three hundred ninety-nine thousand, three hundred seventy".