2164946739 has 16 divisors (see below), whose sum is σ = 2974122144. Its totient is φ = 1399942400.

The previous prime is 2164946723. The next prime is 2164946743. The reversal of 2164946739 is 9376494612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2164946739 - 2⁴ = 2164946723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2164946691 and 2164946700.

It is not an unprimeable number, because it can be changed into a prime (2164946779) 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, 29592 + ... + 72149.

It is an arithmetic number, because the mean of its divisors is an integer number (185882634).

Almost surely, 2^2164946739 is an apocalyptic number.

2164946739 is a deficient number, since it is larger than the sum of its proper divisors (809175405).

2164946739 is a wasteful number, since it uses less digits than its factorization.

2164946739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101958.

The product of its digits is 1959552, while the sum is 51.

The square root of 2164946739 is about 46528.9881579215. The cubic root of 2164946739 is about 1293.6468603815.

The spelling of 2164946739 in words is "two billion, one hundred sixty-four million, nine hundred forty-six thousand, seven hundred thirty-nine".