1918810134 has 36 divisors (see below), whose sum is σ = 4313571444. Its totient is φ = 639281484.

The previous prime is 1918810093. The next prime is 1918810139. The reversal of 1918810134 is 4310188191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918810139) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 964689 + ... + 966675.

It is an arithmetic number, because the mean of its divisors is an integer number (119821429).

Almost surely, 2^1918810134 is an apocalyptic number.

1918810134 is an abundant number, since it is smaller than the sum of its proper divisors (2394761310).

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

1918810134 is an frugal number, since it uses more digits than its factorization.

1918810134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1918810134 is about 43804.2250701916. The cubic root of 1918810134 is about 1242.6361999983.

The spelling of 1918810134 in words is "one billion, nine hundred eighteen million, eight hundred ten thousand, one hundred thirty-four".