1903642854 has 16 divisors (see below), whose sum is σ = 3930101760. Its totient is φ = 614078280.

The previous prime is 1903642801. The next prime is 1903642877. The reversal of 1903642854 is 4582463091.

It is a super-2 number, since 2×1903642854² = 7247712231170530632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5117134 + ... + 5117505.

It is an arithmetic number, because the mean of its divisors is an integer number (245631360).

Almost surely, 2^1903642854 is an apocalyptic number.

1903642854 is an abundant number, since it is smaller than the sum of its proper divisors (2026458906).

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

1903642854 is a wasteful number, since it uses less digits than its factorization.

1903642854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234675.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1903642854 is about 43630.7558265955. The cubic root of 1903642854 is about 1239.3533859917.

The spelling of 1903642854 in words is "one billion, nine hundred three million, six hundred forty-two thousand, eight hundred fifty-four".