19116490 has 16 divisors (see below), whose sum is σ = 34618752. Its totient is φ = 7600144.

The previous prime is 19116479. The next prime is 19116497. The reversal of 19116490 is 9461191.

It is not an unprimeable number, because it can be changed into a prime (19116497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4054 + ... + 7393.

It is an arithmetic number, because the mean of its divisors is an integer number (2163672).

Almost surely, 2^19116490 is an apocalyptic number.

19116490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19116490 is a deficient number, since it is larger than the sum of its proper divisors (15502262).

19116490 is a wasteful number, since it uses less digits than its factorization.

19116490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 19116490 is about 4372.2408442354. The cubic root of 19116490 is about 267.3843911879.

The spelling of 19116490 in words is "nineteen million, one hundred sixteen thousand, four hundred ninety".