1456640023 has 2 divisors, whose sum is σ = 1456640024. Its totient is φ = 1456640022.

The previous prime is 1456639981. The next prime is 1456640039. The reversal of 1456640023 is 3200466541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1456640023 - 2⁹ = 1456639511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1456640063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728320011 + 728320012.

It is an arithmetic number, because the mean of its divisors is an integer number (728320012).

Almost surely, 2^1456640023 is an apocalyptic number.

1456640023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456640023 is an equidigital number, since it uses as much as digits as its factorization.

1456640023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1456640023 is about 38165.9537153207. The cubic root of 1456640023 is about 1133.5762706912.

The spelling of 1456640023 in words is "one billion, four hundred fifty-six million, six hundred forty thousand, twenty-three".