2159690458 has 16 divisors (see below), whose sum is σ = 3259886760. Its totient is φ = 1073074176.

The previous prime is 2159690447. The next prime is 2159690459. The reversal of 2159690458 is 8540969512.

It can be written as a sum of positive squares in 4 ways, for example, as 986148409 + 1173542049 = 31403^2 + 34257^2 .

It is not an unprimeable number, because it can be changed into a prime (2159690459) by changing a digit.

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, 428658 + ... + 433666.

Almost surely, 2^2159690458 is an apocalyptic number.

2159690458 is a deficient number, since it is larger than the sum of its proper divisors (1100196302).

2159690458 is a wasteful number, since it uses less digits than its factorization.

2159690458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321.

The product of its (nonzero) digits is 777600, while the sum is 49.

The square root of 2159690458 is about 46472.4698934756. The cubic root of 2159690458 is about 1292.5990621782.

The spelling of 2159690458 in words is "two billion, one hundred fifty-nine million, six hundred ninety thousand, four hundred fifty-eight".