1618313697 has 48 divisors (see below), whose sum is σ = 3138565248. Its totient is φ = 776010240.

The previous prime is 1618313647. The next prime is 1618313699. The reversal of 1618313697 is 7963138161.

It is not a de Polignac number, because 1618313697 - 2⁶ = 1618313633 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1618313699) 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 47 ways as a sum of consecutive naturals, for example, 80808 + ... + 98825.

It is an arithmetic number, because the mean of its divisors is an integer number (65386776).

Almost surely, 2^1618313697 is an apocalyptic number.

It is an amenable number.

1618313697 is a deficient number, since it is larger than the sum of its proper divisors (1520251551).

1618313697 is a wasteful number, since it uses less digits than its factorization.

1618313697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179670 (or 179667 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 1618313697 is about 40228.2698733117. The cubic root of 1618313697 is about 1174.0526414255.

The spelling of 1618313697 in words is "one billion, six hundred eighteen million, three hundred thirteen thousand, six hundred ninety-seven".