1001055994 has 16 divisors (see below), whose sum is σ = 1528045056. Its totient is φ = 491727600.

The previous prime is 1001055989. The next prime is 1001056087. The reversal of 1001055994 is 4995501001.

It is a happy number.

It is a super-2 number, since 2×1001055994² = 2004226206246656072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106639 + ... + 115645.

It is an arithmetic number, because the mean of its divisors is an integer number (95502816).

Almost surely, 2^1001055994 is an apocalyptic number.

1001055994 is a deficient number, since it is larger than the sum of its proper divisors (526989062).

1001055994 is an equidigital number, since it uses as much as digits as its factorization.

1001055994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9981.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 1001055994 is about 31639.4689272750. The cubic root of 1001055994 is about 1000.3518741700.

Adding to 1001055994 its reverse (4995501001), we get a palindrome (5996556995).

The spelling of 1001055994 in words is "one billion, one million, fifty-five thousand, nine hundred ninety-four".