1018621164 has 48 divisors (see below), whose sum is σ = 2745380736. Its totient is φ = 290515200.

The previous prime is 1018621129. The next prime is 1018621193. The reversal of 1018621164 is 4611268101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224722 + ... + 229209.

It is an arithmetic number, because the mean of its divisors is an integer number (57195432).

Almost surely, 2^1018621164 is an apocalyptic number.

It is an amenable number.

1018621164 is an abundant number, since it is smaller than the sum of its proper divisors (1726759572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1018621164 is a wasteful number, since it uses less digits than its factorization.

1018621164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453966 (or 453964 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1018621164 is about 31915.8450303294. The cubic root of 1018621164 is about 1006.1689208285.

Adding to 1018621164 its reverse (4611268101), we get a palindrome (5629889265).

The spelling of 1018621164 in words is "one billion, eighteen million, six hundred twenty-one thousand, one hundred sixty-four".