1031139648 has 336 divisors, whose sum is σ = 3750649344. Its totient is φ = 263070720.

The previous prime is 1031139623. The next prime is 1031139653. The reversal of 1031139648 is 8469311301.

1031139648 is a `hidden beast` number, since 1 + 0 + 3 + 1 + 1 + 3 + 9 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2971411 + ... + 2971757.

Almost surely, 2^1031139648 is an apocalyptic number.

1031139648 is a gapful number since it is divisible by the number (18) 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 1031139648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875324672).

1031139648 is an abundant number, since it is smaller than the sum of its proper divisors (2719509696).

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

1031139648 is a wasteful number, since it uses less digits than its factorization.

1031139648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1031139648 is about 32111.3632223859. The cubic root of 1031139648 is about 1010.2739667857.

The spelling of 1031139648 in words is "one billion, thirty-one million, one hundred thirty-nine thousand, six hundred forty-eight".