1916249650 has 24 divisors (see below), whose sum is σ = 4073400000. Its totient is φ = 656999760.

The previous prime is 1916249641. The next prime is 1916249653. The reversal of 1916249650 is 569426191.

It is a super-2 number, since 2×1916249650² = 7344025442250245000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1916249597 and 1916249606.

It is not an unprimeable number, because it can be changed into a prime (1916249653) 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, 2737150 + ... + 2737849.

It is an arithmetic number, because the mean of its divisors is an integer number (169725000).

Almost surely, 2^1916249650 is an apocalyptic number.

1916249650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916249650 is an abundant number, since it is smaller than the sum of its proper divisors (2157150350).

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

1916249650 is a wasteful number, since it uses less digits than its factorization.

1916249650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475018 (or 5475013 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1916249650 is about 43774.9888635052. The cubic root of 1916249650 is about 1242.0832242492.

The spelling of 1916249650 in words is "one billion, nine hundred sixteen million, two hundred forty-nine thousand, six hundred fifty".