1613979697 has 8 divisors (see below), whose sum is σ = 1778139072. Its totient is φ = 1452726000.

The previous prime is 1613979641. The next prime is 1613979707. The reversal of 1613979697 is 7969793161.

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

It is not a de Polignac number, because 1613979697 - 2¹¹ = 1613977649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613979607) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 725253 + ... + 727474.

It is an arithmetic number, because the mean of its divisors is an integer number (222267384).

Almost surely, 2^1613979697 is an apocalyptic number.

It is an amenable number.

1613979697 is a deficient number, since it is larger than the sum of its proper divisors (164159375).

1613979697 is a wasteful number, since it uses less digits than its factorization.

1613979697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452839.

The product of its digits is 3857868, while the sum is 58.

The square root of 1613979697 is about 40174.3661679932. The cubic root of 1613979697 is about 1173.0036290520.

The spelling of 1613979697 in words is "one billion, six hundred thirteen million, nine hundred seventy-nine thousand, six hundred ninety-seven".