1613279875 has 16 divisors (see below), whose sum is σ = 2021834880. Its totient is φ = 1285200000.

The previous prime is 1613279827. The next prime is 1613279903. The reversal of 1613279875 is 5789723161.

It is a happy number.

It is not a de Polignac number, because 1613279875 - 2¹³ = 1613271683 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2875 + ... + 56875.

It is an arithmetic number, because the mean of its divisors is an integer number (126364680).

Almost surely, 2^1613279875 is an apocalyptic number.

1613279875 is a deficient number, since it is larger than the sum of its proper divisors (408555005).

1613279875 is an equidigital number, since it uses as much as digits as its factorization.

1613279875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54255 (or 54245 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

The square root of 1613279875 is about 40165.6554160392. The cubic root of 1613279875 is about 1172.8340663199.

The spelling of 1613279875 in words is "one billion, six hundred thirteen million, two hundred seventy-nine thousand, eight hundred seventy-five".