1623137401 has 4 divisors (see below), whose sum is σ = 1675496704. Its totient is φ = 1570778100.

The previous prime is 1623137371. The next prime is 1623137431. The reversal of 1623137401 is 1047313261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1623137371) and next prime (1623137431).

It is a cyclic number.

It is not a de Polignac number, because 1623137401 - 2⁷ = 1623137273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1623137401.

It is not an unprimeable number, because it can be changed into a prime (1623137431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26179605 + ... + 26179666.

It is an arithmetic number, because the mean of its divisors is an integer number (418874176).

Almost surely, 2^1623137401 is an apocalyptic number.

It is an amenable number.

1623137401 is a deficient number, since it is larger than the sum of its proper divisors (52359303).

1623137401 is an equidigital number, since it uses as much as digits as its factorization.

1623137401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52359302.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1623137401 is about 40288.1794202716. The cubic root of 1623137401 is about 1175.2179830375.

The spelling of 1623137401 in words is "one billion, six hundred twenty-three million, one hundred thirty-seven thousand, four hundred one".