1613912649 has 16 divisors (see below), whose sum is σ = 2313338880. Its totient is φ = 997624080.

The previous prime is 1613912647. The next prime is 1613912659. The reversal of 1613912649 is 9462193161.

It is not a de Polignac number, because 1613912649 - 2¹ = 1613912647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1613912649.

It is not an unprimeable number, because it can be changed into a prime (1613912647) 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, 298537 + ... + 303894.

It is an arithmetic number, because the mean of its divisors is an integer number (144583680).

Almost surely, 2^1613912649 is an apocalyptic number.

1613912649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1613912649 is a deficient number, since it is larger than the sum of its proper divisors (699426231).

1613912649 is a wasteful number, since it uses less digits than its factorization.

1613912649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602500.

The product of its digits is 69984, while the sum is 42.

The square root of 1613912649 is about 40173.5316968772. The cubic root of 1613912649 is about 1172.9873858414.

The spelling of 1613912649 in words is "one billion, six hundred thirteen million, nine hundred twelve thousand, six hundred forty-nine".