1919669490 has 32 divisors (see below), whose sum is σ = 5119119360. Its totient is φ = 511911792.

The previous prime is 1919669473. The next prime is 1919669497. The reversal of 1919669490 is 949669191.

1919669490 is a `hidden beast` number, since 1 + 9 + 1 + 96 + 69 + 490 = 666.

1919669490 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1919669497) 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, 3554674 + ... + 3555213.

It is an arithmetic number, because the mean of its divisors is an integer number (159972480).

Almost surely, 2^1919669490 is an apocalyptic number.

1919669490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1919669490 is an abundant number, since it is smaller than the sum of its proper divisors (3199449870).

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

1919669490 is a wasteful number, since it uses less digits than its factorization.

1919669490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109903 (or 7109897 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 1919669490 is about 43814.0330259610. The cubic root of 1919669490 is about 1242.8216808295.

The spelling of 1919669490 in words is "one billion, nine hundred nineteen million, six hundred sixty-nine thousand, four hundred ninety".