1001132990 has 64 divisors (see below), whose sum is σ = 2228567040. Its totient is φ = 318349440.

The previous prime is 1001132989. The next prime is 1001133011. The reversal of 1001132990 is 992311001.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 8747 + ... + 45593.

It is an arithmetic number, because the mean of its divisors is an integer number (34821360).

Almost surely, 2^1001132990 is an apocalyptic number.

1001132990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001132990 is an abundant number, since it is smaller than the sum of its proper divisors (1227434050).

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

1001132990 is a wasteful number, since it uses less digits than its factorization.

1001132990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36897.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1001132990 is about 31640.6856752505. The cubic root of 1001132990 is about 1000.3775207934.

Adding to 1001132990 its reverse (992311001), we get a palindrome (1993443991).

The spelling of 1001132990 in words is "one billion, one million, one hundred thirty-two thousand, nine hundred ninety".