1916580650 has 24 divisors (see below), whose sum is σ = 3590499360. Its totient is φ = 761114160.

The previous prime is 1916580619. The next prime is 1916580689. The reversal of 1916580650 is 560856191.

It is a junction number, because it is equal to n+sod(n) for n = 1916580598 and 1916580607.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130934 + ... + 144833.

It is an arithmetic number, because the mean of its divisors is an integer number (149604140).

Almost surely, 2^1916580650 is an apocalyptic number.

1916580650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916580650 is a deficient number, since it is larger than the sum of its proper divisors (1673918710).

1916580650 is a wasteful number, since it uses less digits than its factorization.

1916580650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275918 (or 275913 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 1916580650 is about 43778.7693979628. The cubic root of 1916580650 is about 1242.1547364827.

The spelling of 1916580650 in words is "one billion, nine hundred sixteen million, five hundred eighty thousand, six hundred fifty".