1899455142 has 32 divisors (see below), whose sum is σ = 4092836832. Its totient is φ = 584204544.

The previous prime is 1899455113. The next prime is 1899455147. The reversal of 1899455142 is 2415549981.

It is a junction number, because it is equal to n+sod(n) for n = 1899455091 and 1899455100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899455147) 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, 302418 + ... + 308634.

It is an arithmetic number, because the mean of its divisors is an integer number (127901151).

Almost surely, 2^1899455142 is an apocalyptic number.

1899455142 is an abundant number, since it is smaller than the sum of its proper divisors (2193381690).

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

1899455142 is a wasteful number, since it uses less digits than its factorization.

1899455142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152.

The product of its digits is 518400, while the sum is 48.

The square root of 1899455142 is about 43582.7390373758. The cubic root of 1899455142 is about 1238.4439252246.

The spelling of 1899455142 in words is "one billion, eight hundred ninety-nine million, four hundred fifty-five thousand, one hundred forty-two".