1456431091 has 2 divisors, whose sum is σ = 1456431092. Its totient is φ = 1456431090.

The previous prime is 1456431083. The next prime is 1456431133. The reversal of 1456431091 is 1901346541.

It is a weak prime.

It is an emirp because it is prime and its reverse (1901346541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1456431091 - 2³ = 1456431083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1456431071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728215545 + 728215546.

It is an arithmetic number, because the mean of its divisors is an integer number (728215546).

Almost surely, 2^1456431091 is an apocalyptic number.

1456431091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456431091 is an equidigital number, since it uses as much as digits as its factorization.

1456431091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1456431091 is about 38163.2164655968. The cubic root of 1456431091 is about 1133.5220702302.

The spelling of 1456431091 in words is "one billion, four hundred fifty-six million, four hundred thirty-one thousand, ninety-one".