1623542473 has 8 divisors (see below), whose sum is σ = 1870088192. Its totient is φ = 1380649536.

The previous prime is 1623542461. The next prime is 1623542489. The reversal of 1623542473 is 3742453261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1623542473 - 2²¹ = 1621445321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1623542413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912240 + ... + 914017.

It is an arithmetic number, because the mean of its divisors is an integer number (233761024).

Almost surely, 2^1623542473 is an apocalyptic number.

It is an amenable number.

1623542473 is a deficient number, since it is larger than the sum of its proper divisors (246545719).

1623542473 is a wasteful number, since it uses less digits than its factorization.

1623542473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826391.

The product of its digits is 120960, while the sum is 37.

The square root of 1623542473 is about 40293.2062884055. The cubic root of 1623542473 is about 1175.3157378144.

The spelling of 1623542473 in words is "one billion, six hundred twenty-three million, five hundred forty-two thousand, four hundred seventy-three".