7960162921 has 4 divisors (see below), whose sum is σ = 7963207252. Its totient is φ = 7957118592.

The previous prime is 7960162913. The next prime is 7960162927. The reversal of 7960162921 is 1292610697.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6053618025 + 1906544896 = 77805^2 + 43664^2 .

It is a cyclic number.

It is not a de Polignac number, because 7960162921 - 2³ = 7960162913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7960162927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518240 + ... + 1523473.

It is an arithmetic number, because the mean of its divisors is an integer number (1990801813).

Almost surely, 2^7960162921 is an apocalyptic number.

It is an amenable number.

7960162921 is a deficient number, since it is larger than the sum of its proper divisors (3044331).

7960162921 is a wasteful number, since it uses less digits than its factorization.

7960162921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044330.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 7960162921 is about 89219.7451296517. The cubic root of 7960162921 is about 1996.6747177297.

The spelling of 7960162921 in words is "seven billion, nine hundred sixty million, one hundred sixty-two thousand, nine hundred twenty-one".