1616990249 has 12 divisors (see below), whose sum is σ = 1904803200. Its totient is φ = 1368444168.

The previous prime is 1616990233. The next prime is 1616990273. The reversal of 1616990249 is 9420996161.

It is not a de Polignac number, because 1616990249 - 2⁴ = 1616990233 is a prime.

It is a super-2 number, since 2×1616990249² = 5229314930722164002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616990299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204989 + ... + 212730.

It is an arithmetic number, because the mean of its divisors is an integer number (158733600).

Almost surely, 2^1616990249 is an apocalyptic number.

It is an amenable number.

1616990249 is a deficient number, since it is larger than the sum of its proper divisors (287812951).

1616990249 is an equidigital number, since it uses as much as digits as its factorization.

1616990249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417812 (or 417805 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 1616990249 is about 40211.8172804960. The cubic root of 1616990249 is about 1173.7325095545.

The spelling of 1616990249 in words is "one billion, six hundred sixteen million, nine hundred ninety thousand, two hundred forty-nine".