1891074048 has 64 divisors (see below), whose sum is σ = 5043049320. Its totient is φ = 630325248.

The previous prime is 1891074041. The next prime is 1891074049. The reversal of 1891074048 is 8404701981.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1891074048² = 7152322110038212608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891074041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88686 + ... + 107922.

Almost surely, 2^1891074048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1891074048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2521524660).

1891074048 is an abundant number, since it is smaller than the sum of its proper divisors (3151975272).

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

1891074048 is an frugal number, since it uses more digits than its factorization.

1891074048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19270 (or 19242 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1891074048 is about 43486.4812096817. The cubic root of 1891074048 is about 1236.6197497315.

The spelling of 1891074048 in words is "one billion, eight hundred ninety-one million, seventy-four thousand, forty-eight".