1148620961 has 2 divisors, whose sum is σ = 1148620962. Its totient is φ = 1148620960.

The previous prime is 1148620937. The next prime is 1148620987. The reversal of 1148620961 is 1690268411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895206400 + 253414561 = 29920^2 + 15919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148620961 - 2¹⁰ = 1148619937 is a prime.

It is a super-2 number, since 2×1148620961² = 2638660224097127042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1148620901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574310480 + 574310481.

It is an arithmetic number, because the mean of its divisors is an integer number (574310481).

Almost surely, 2^1148620961 is an apocalyptic number.

It is an amenable number.

1148620961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148620961 is an equidigital number, since it uses as much as digits as its factorization.

1148620961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1148620961 is about 33891.3109955930. The cubic root of 1148620961 is about 1047.2706016765.

The spelling of 1148620961 in words is "one billion, one hundred forty-eight million, six hundred twenty thousand, nine hundred sixty-one".