2159995634 has 4 divisors (see below), whose sum is σ = 3239993454. Its totient is φ = 1079997816.

The previous prime is 2159995633. The next prime is 2159995637. The reversal of 2159995634 is 4365999512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2151568225 + 8427409 = 46385^2 + 2903^2 .

It is a super-2 number, since 2×2159995634² = 9331162277798123912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2159995633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539998907 + ... + 539998910.

Almost surely, 2^2159995634 is an apocalyptic number.

2159995634 is a deficient number, since it is larger than the sum of its proper divisors (1079997820).

2159995634 is a wasteful number, since it uses less digits than its factorization.

2159995634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079997819.

The product of its digits is 2624400, while the sum is 53.

The square root of 2159995634 is about 46475.7531837839. The cubic root of 2159995634 is about 1292.6599430684.

The spelling of 2159995634 in words is "two billion, one hundred fifty-nine million, nine hundred ninety-five thousand, six hundred thirty-four".