1918400150 has 24 divisors (see below), whose sum is σ = 3575121624. Its totient is φ = 765876800.

The previous prime is 1918400149. The next prime is 1918400233. The reversal of 1918400150 is 510048191.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10772 + ... + 62871.

It is an arithmetic number, because the mean of its divisors is an integer number (148963401).

Almost surely, 2^1918400150 is an apocalyptic number.

1918400150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1918400150 is a deficient number, since it is larger than the sum of its proper divisors (1656721474).

1918400150 is a wasteful number, since it uses less digits than its factorization.

1918400150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74176 (or 74171 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 1918400150 is about 43799.5450889618. The cubic root of 1918400150 is about 1242.5476907637.

The spelling of 1918400150 in words is "one billion, nine hundred eighteen million, four hundred thousand, one hundred fifty".