19290138 has 32 divisors (see below), whose sum is σ = 46687104. Its totient is φ = 5187072.

The previous prime is 19290137. The next prime is 19290151. The reversal of 19290138 is 83109291.

It is a junction number, because it is equal to n+sod(n) for n = 19290099 and 19290108.

It is not an unprimeable number, because it can be changed into a prime (19290137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12795 + ... + 14222.

It is an arithmetic number, because the mean of its divisors is an integer number (1458972).

Almost surely, 2^19290138 is an apocalyptic number.

19290138 is an abundant number, since it is smaller than the sum of its proper divisors (27396966).

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

19290138 is a wasteful number, since it uses less digits than its factorization.

19290138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27046.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19290138 is about 4392.0539614171. The cubic root of 19290138 is about 268.1915631221.

The spelling of 19290138 in words is "nineteen million, two hundred ninety thousand, one hundred thirty-eight".