19013970 has 16 divisors (see below), whose sum is σ = 45633600. Its totient is φ = 5070384.

The previous prime is 19013963. The next prime is 19013971. The reversal of 19013970 is 7931091.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 633799 = 19013970 / (1 + 9 + 0 + 1 + 3 + 9 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (19013971) 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, 316870 + ... + 316929.

It is an arithmetic number, because the mean of its divisors is an integer number (2852100).

Almost surely, 2^19013970 is an apocalyptic number.

19013970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19013970 is an abundant number, since it is smaller than the sum of its proper divisors (26619630).

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

19013970 is a wasteful number, since it uses less digits than its factorization.

19013970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633809.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 19013970 is about 4360.5011179909. The cubic root of 19013970 is about 266.9055480976.

The spelling of 19013970 in words is "nineteen million, thirteen thousand, nine hundred seventy".