1613166247 has 16 divisors (see below), whose sum is σ = 2049172992. Its totient is φ = 1233292320.

The previous prime is 1613166241. The next prime is 1613166257. The reversal of 1613166247 is 7426613161.

It is a cyclic number.

It is not a de Polignac number, because 1613166247 - 2⁷ = 1613166119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613166241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193563 + ... + 201724.

It is an arithmetic number, because the mean of its divisors is an integer number (128073312).

Almost surely, 2^1613166247 is an apocalyptic number.

1613166247 is a deficient number, since it is larger than the sum of its proper divisors (436006745).

1613166247 is a wasteful number, since it uses less digits than its factorization.

1613166247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395358.

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

The square root of 1613166247 is about 40164.2408990883. The cubic root of 1613166247 is about 1172.8065303004.

The spelling of 1613166247 in words is "one billion, six hundred thirteen million, one hundred sixty-six thousand, two hundred forty-seven".