2149564942 has 8 divisors (see below), whose sum is σ = 3684968496. Its totient is φ = 921242112.

The previous prime is 2149564897. The next prime is 2149564993. The reversal of 2149564942 is 2494659412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2149564892 and 2149564901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76770163 + ... + 76770190.

It is an arithmetic number, because the mean of its divisors is an integer number (460621062).

Almost surely, 2^2149564942 is an apocalyptic number.

2149564942 is a deficient number, since it is larger than the sum of its proper divisors (1535403554).

2149564942 is a wasteful number, since it uses less digits than its factorization.

2149564942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153540362.

The product of its digits is 622080, while the sum is 46.

The square root of 2149564942 is about 46363.4008890633. The cubic root of 2149564942 is about 1290.5758184895.

The spelling of 2149564942 in words is "two billion, one hundred forty-nine million, five hundred sixty-four thousand, nine hundred forty-two".