1024944991 has 16 divisors (see below), whose sum is σ = 1200660480. Its totient is φ = 856789920.

The previous prime is 1024944989. The next prime is 1024945007. The reversal of 1024944991 is 1994494201.

It is not a de Polignac number, because 1024944991 - 2¹ = 1024944989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024944961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42681 + ... + 62221.

It is an arithmetic number, because the mean of its divisors is an integer number (75041280).

Almost surely, 2^1024944991 is an apocalyptic number.

1024944991 is a deficient number, since it is larger than the sum of its proper divisors (175715489).

1024944991 is a wasteful number, since it uses less digits than its factorization.

1024944991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19734.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1024944991 is about 32014.7620793908. The cubic root of 1024944991 is about 1008.2468003301.

The spelling of 1024944991 in words is "one billion, twenty-four million, nine hundred forty-four thousand, nine hundred ninety-one".