1613145544 has 16 divisors (see below), whose sum is σ = 3030969600. Its totient is φ = 804886992.

The previous prime is 1613145511. The next prime is 1613145553. The reversal of 1613145544 is 4455413161.

It is a super-2 number, since 2×1613145544² = 5204477092254111872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206652 + ... + 214315.

It is an arithmetic number, because the mean of its divisors is an integer number (189435600).

Almost surely, 2^1613145544 is an apocalyptic number.

It is an amenable number.

1613145544 is a deficient number, since it is larger than the sum of its proper divisors (1417824056).

1613145544 is a wasteful number, since it uses less digits than its factorization.

1613145544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421452 (or 421448 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 1613145544 is about 40163.9831690035. The cubic root of 1613145544 is about 1172.8015131037.

The spelling of 1613145544 in words is "one billion, six hundred thirteen million, one hundred forty-five thousand, five hundred forty-four".