1163631045 has 48 divisors (see below), whose sum is σ = 2026317888. Its totient is φ = 569763840.

The previous prime is 1163631031. The next prime is 1163631047. The reversal of 1163631045 is 5401363611.

It is not a de Polignac number, because 1163631045 - 2¹¹ = 1163628997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163631047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174462 + ... + 181008.

It is an arithmetic number, because the mean of its divisors is an integer number (42214956).

Almost surely, 2^1163631045 is an apocalyptic number.

1163631045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1163631045 is a deficient number, since it is larger than the sum of its proper divisors (862686843).

1163631045 is a wasteful number, since it uses less digits than its factorization.

1163631045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630 (or 6613 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1163631045 is about 34112.0366586341. The cubic root of 1163631045 is about 1051.8127552189.

Adding to 1163631045 its reverse (5401363611), we get a palindrome (6564994656).

The spelling of 1163631045 in words is "one billion, one hundred sixty-three million, six hundred thirty-one thousand, forty-five".