1613304945 has 192 divisors, whose sum is σ = 3555901440. Its totient is φ = 685843200.

The previous prime is 1613304943. The next prime is 1613304971. The reversal of 1613304945 is 5494033161.

1613304945 is a `hidden beast` number, since 1 + 613 + 30 + 4 + 9 + 4 + 5 = 666.

It is not a de Polignac number, because 1613304945 - 2¹ = 1613304943 is a prime.

It is a super-2 number, since 2×1613304945² = 5205505691122906050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1613304943) 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 191 ways as a sum of consecutive naturals, for example, 7645890 + ... + 7646100.

It is an arithmetic number, because the mean of its divisors is an integer number (18520320).

Almost surely, 2^1613304945 is an apocalyptic number.

1613304945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1613304945 is an abundant number, since it is smaller than the sum of its proper divisors (1942596495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1613304945 is a wasteful number, since it uses less digits than its factorization.

1613304945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1613304945 is about 40165.9674973727. The cubic root of 1613304945 is about 1172.8401414794.

The spelling of 1613304945 in words is "one billion, six hundred thirteen million, three hundred four thousand, nine hundred forty-five".