1011630657 has 16 divisors (see below), whose sum is σ = 1399444992. Its totient is φ = 649340160.

The previous prime is 1011630647. The next prime is 1011630673. The reversal of 1011630657 is 7560361101.

It is not a de Polignac number, because 1011630657 - 2¹⁵ = 1011597889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011630617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9288 + ... + 45929.

It is an arithmetic number, because the mean of its divisors is an integer number (87465312).

Almost surely, 2^1011630657 is an apocalyptic number.

It is an amenable number.

1011630657 is a deficient number, since it is larger than the sum of its proper divisors (387814335).

1011630657 is a wasteful number, since it uses less digits than its factorization.

1011630657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55448.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 1011630657 is about 31806.1418125493. The cubic root of 1011630657 is about 1003.8619517951.

Adding to 1011630657 its reverse (7560361101), we get a palindrome (8571991758).

The spelling of 1011630657 in words is "one billion, eleven million, six hundred thirty thousand, six hundred fifty-seven".