1613993397 has 8 divisors (see below), whose sum is σ = 2152192800. Its totient is φ = 1075894800.

The previous prime is 1613993389. The next prime is 1613993401. The reversal of 1613993397 is 7933993161.

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

It is not a de Polignac number, because 1613993397 - 2³ = 1613993389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613993387) 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, 28522 + ... + 63572.

It is an arithmetic number, because the mean of its divisors is an integer number (269024100).

Almost surely, 2^1613993397 is an apocalyptic number.

It is an amenable number.

1613993397 is a deficient number, since it is larger than the sum of its proper divisors (538199403).

1613993397 is a wasteful number, since it uses less digits than its factorization.

1613993397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50403.

The product of its digits is 826686, while the sum is 51.

The square root of 1613993397 is about 40174.5366743663. The cubic root of 1613993397 is about 1173.0069479918.

The spelling of 1613993397 in words is "one billion, six hundred thirteen million, nine hundred ninety-three thousand, three hundred ninety-seven".