1051894404 has 96 divisors (see below), whose sum is σ = 3038515200. Its totient is φ = 311957280.

The previous prime is 1051894381. The next prime is 1051894427. The reversal of 1051894404 is 4044981501.

1051894404 is a `hidden beast` number, since 10 + 518 + 94 + 40 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1051894381) and next prime (1051894427).

It is a super-2 number, since 2×1051894404² = 2212963674333030432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46417 + ... + 65255.

It is an arithmetic number, because the mean of its divisors is an integer number (31651200).

Almost surely, 2^1051894404 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 1051894404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519257600).

1051894404 is an abundant number, since it is smaller than the sum of its proper divisors (1986620796).

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

1051894404 is a wasteful number, since it uses less digits than its factorization.

1051894404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18910 (or 18902 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1051894404 is about 32432.9216075271. The cubic root of 1051894404 is about 1017.0072484060.

The spelling of 1051894404 in words is "one billion, fifty-one million, eight hundred ninety-four thousand, four hundred four".