1890742330 has 16 divisors (see below), whose sum is σ = 3410449920. Its totient is φ = 754716112.

The previous prime is 1890742327. The next prime is 1890742331. The reversal of 1890742330 is 332470981.

It is a self number, because there is not a number n which added to its sum of digits gives 1890742330.

It is not an unprimeable number, because it can be changed into a prime (1890742331) 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, 192574 + ... + 202153.

It is an arithmetic number, because the mean of its divisors is an integer number (213153120).

Almost surely, 2^1890742330 is an apocalyptic number.

1890742330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1890742330 is a deficient number, since it is larger than the sum of its proper divisors (1519707590).

1890742330 is a wasteful number, since it uses less digits than its factorization.

1890742330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395213.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1890742330 is about 43482.6670065211. The cubic root of 1890742330 is about 1236.5474393217.

The spelling of 1890742330 in words is "one billion, eight hundred ninety million, seven hundred forty-two thousand, three hundred thirty".