1890964870 has 16 divisors (see below), whose sum is σ = 3409857648. Its totient is φ = 755025760.

The previous prime is 1890964853. The next prime is 1890964897. The reversal of 1890964870 is 784690981.

It is a happy number.

It is a congruent number.

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, 164176 + ... + 175315.

It is an arithmetic number, because the mean of its divisors is an integer number (213116103).

Almost surely, 2^1890964870 is an apocalyptic number.

1890964870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1890964870 is a deficient number, since it is larger than the sum of its proper divisors (1518892778).

1890964870 is a wasteful number, since it uses less digits than its factorization.

1890964870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340055.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 1890964870 is about 43485.2258819015. The cubic root of 1890964870 is about 1236.5959512152.

The spelling of 1890964870 in words is "one billion, eight hundred ninety million, nine hundred sixty-four thousand, eight hundred seventy".