1051505663 has 6 divisors (see below), whose sum is σ = 1138612824. Its totient is φ = 970620456.

The previous prime is 1051505633. The next prime is 1051505683. The reversal of 1051505663 is 3665051501.

It is not a de Polignac number, because 1051505663 - 2⁸ = 1051505407 is a prime.

It is a super-2 number, since 2×1051505663² = 2211328318642139138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051505603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3110795 + ... + 3111132.

It is an arithmetic number, because the mean of its divisors is an integer number (189768804).

Almost surely, 2^1051505663 is an apocalyptic number.

1051505663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1051505663 is a deficient number, since it is larger than the sum of its proper divisors (87107161).

1051505663 is an equidigital number, since it uses as much as digits as its factorization.

1051505663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221953 (or 6221940 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1051505663 is about 32426.9280537025. The cubic root of 1051505663 is about 1016.8819503007.

The spelling of 1051505663 in words is "one billion, fifty-one million, five hundred five thousand, six hundred sixty-three".