1623474091 has 2 divisors, whose sum is σ = 1623474092. Its totient is φ = 1623474090.

The previous prime is 1623474077. The next prime is 1623474103. The reversal of 1623474091 is 1904743261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1623474091 - 2⁷ = 1623473963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1623474091.

It is not a weakly prime, because it can be changed into another prime (1623474691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811737045 + 811737046.

It is an arithmetic number, because the mean of its divisors is an integer number (811737046).

Almost surely, 2^1623474091 is an apocalyptic number.

1623474091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623474091 is an equidigital number, since it uses as much as digits as its factorization.

1623474091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1623474091 is about 40292.3577245115. The cubic root of 1623474091 is about 1175.2992365380.

The spelling of 1623474091 in words is "one billion, six hundred twenty-three million, four hundred seventy-four thousand, ninety-one".