1616801249 has 32 divisors (see below), whose sum is σ = 1950842880. Its totient is φ = 1310846400.

The previous prime is 1616801237. The next prime is 1616801293. The reversal of 1616801249 is 9421086161.

It is a cyclic number.

It is not a de Polignac number, because 1616801249 - 2²⁴ = 1600024033 is a prime.

It is a super-2 number, since 2×1616801249² = 5228092557535920002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616801209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3751064 + ... + 3751494.

It is an arithmetic number, because the mean of its divisors is an integer number (60963840).

Almost surely, 2^1616801249 is an apocalyptic number.

It is an amenable number.

1616801249 is a deficient number, since it is larger than the sum of its proper divisors (334041631).

1616801249 is a wasteful number, since it uses less digits than its factorization.

1616801249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1616801249 is about 40209.4671563800. The cubic root of 1616801249 is about 1173.6867776588.

The spelling of 1616801249 in words is "one billion, six hundred sixteen million, eight hundred one thousand, two hundred forty-nine".