1040642513 has 2 divisors, whose sum is σ = 1040642514. Its totient is φ = 1040642512.

The previous prime is 1040642497. The next prime is 1040642587. The reversal of 1040642513 is 3152460401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018439569 + 22202944 = 31913^2 + 4712^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040642513 - 2⁴ = 1040642497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040632513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520321256 + 520321257.

It is an arithmetic number, because the mean of its divisors is an integer number (520321257).

Almost surely, 2^1040642513 is an apocalyptic number.

It is an amenable number.

1040642513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040642513 is an equidigital number, since it uses as much as digits as its factorization.

1040642513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1040642513 is about 32258.9911962541. The cubic root of 1040642513 is about 1013.3680044861.

The spelling of 1040642513 in words is "one billion, forty million, six hundred forty-two thousand, five hundred thirteen".