19081380 has 24 divisors (see below), whose sum is σ = 53428032. Its totient is φ = 5088352.

The previous prime is 19081373. The next prime is 19081409. The reversal of 19081380 is 8318091.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158952 + ... + 159071.

It is an arithmetic number, because the mean of its divisors is an integer number (2226168).

Almost surely, 2^19081380 is an apocalyptic number.

19081380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19081380 is an abundant number, since it is smaller than the sum of its proper divisors (34346652).

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

19081380 is a wasteful number, since it uses less digits than its factorization.

19081380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318035 (or 318033 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 19081380 is about 4368.2238953607. The cubic root of 19081380 is about 267.2205950934.

The spelling of 19081380 in words is "nineteen million, eighty-one thousand, three hundred eighty".