1613656123 has 8 divisors (see below), whose sum is σ = 1649889792. Its totient is φ = 1577501736.

The previous prime is 1613656117. The next prime is 1613656127. The reversal of 1613656123 is 3216563161.

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

It is a cyclic number.

It is not a de Polignac number, because 1613656123 - 2⁵ = 1613656091 is a prime.

It is a super-2 number, since 2×1613656123² = 5207772166590782258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613656127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22336 + ... + 61042.

It is an arithmetic number, because the mean of its divisors is an integer number (206236224).

Almost surely, 2^1613656123 is an apocalyptic number.

1613656123 is a deficient number, since it is larger than the sum of its proper divisors (36233669).

1613656123 is an equidigital number, since it uses as much as digits as its factorization.

1613656123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39641.

The product of its digits is 19440, while the sum is 34.

The square root of 1613656123 is about 40170.3388459694. The cubic root of 1613656123 is about 1172.9252350787.

The spelling of 1613656123 in words is "one billion, six hundred thirteen million, six hundred fifty-six thousand, one hundred twenty-three".