1051046640 has 240 divisors, whose sum is σ = 4209873408. Its totient is φ = 229768704.

The previous prime is 1051046639. The next prime is 1051046669. The reversal of 1051046640 is 466401501.

1051046640 is a `hidden beast` number, since 1 + 0 + 5 + 10 + 4 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1051046640² = 2209398078910579200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111387 + ... + 120453.

Almost surely, 2^1051046640 is an apocalyptic number.

1051046640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1051046640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2104936704).

1051046640 is an abundant number, since it is smaller than the sum of its proper divisors (3158826768).

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

1051046640 is a wasteful number, since it uses less digits than its factorization.

1051046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9116 (or 9107 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1051046640 is about 32419.8494752829. The cubic root of 1051046640 is about 1016.7339592951.

The spelling of 1051046640 in words is "one billion, fifty-one million, forty-six thousand, six hundred forty".