948153721 has 2 divisors, whose sum is σ = 948153722. Its totient is φ = 948153720.

The previous prime is 948153707. The next prime is 948153727. The reversal of 948153721 is 127351849.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 539911696 + 408242025 = 23236^2 + 20205^2 .

It is a cyclic number.

It is not a de Polignac number, because 948153721 - 2⁷ = 948153593 is a prime.

It is a super-2 number, since 2×948153721² = 1797990957292291682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (948153727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474076860 + 474076861.

It is an arithmetic number, because the mean of its divisors is an integer number (474076861).

Almost surely, 2^948153721 is an apocalyptic number.

It is an amenable number.

948153721 is a deficient number, since it is larger than the sum of its proper divisors (1).

948153721 is an equidigital number, since it uses as much as digits as its factorization.

948153721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 948153721 is about 30792.1048484835. The cubic root of 948153721 is about 982.4103243738.

The spelling of 948153721 in words is "nine hundred forty-eight million, one hundred fifty-three thousand, seven hundred twenty-one".