1634618089 has 16 divisors (see below), whose sum is σ = 1916913600. Its totient is φ = 1380165696.

The previous prime is 1634618087. The next prime is 1634618099. The reversal of 1634618089 is 9808164361.

It is not a de Polignac number, because 1634618089 - 2¹ = 1634618087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634618081) 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, 106939 + ... + 121264.

It is an arithmetic number, because the mean of its divisors is an integer number (119807100).

Almost surely, 2^1634618089 is an apocalyptic number.

1634618089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1634618089 is a deficient number, since it is larger than the sum of its proper divisors (282295511).

1634618089 is a wasteful number, since it uses less digits than its factorization.

1634618089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228264.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1634618089 is about 40430.4104480773. The cubic root of 1634618089 is about 1177.9823052639.

The spelling of 1634618089 in words is "one billion, six hundred thirty-four million, six hundred eighteen thousand, eighty-nine".