1899340422 has 32 divisors (see below), whose sum is σ = 4342643712. Its totient is φ = 542506944.

The previous prime is 1899340411. The next prime is 1899340423. The reversal of 1899340422 is 2240439981.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899340423) 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, 260458 + ... + 267650.

It is an arithmetic number, because the mean of its divisors is an integer number (135707616).

Almost surely, 2^1899340422 is an apocalyptic number.

1899340422 is an abundant number, since it is smaller than the sum of its proper divisors (2443303290).

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

1899340422 is a wasteful number, since it uses less digits than its factorization.

1899340422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1899340422 is about 43581.4229001303. The cubic root of 1899340422 is about 1238.4189922593.

The spelling of 1899340422 in words is "one billion, eight hundred ninety-nine million, three hundred forty thousand, four hundred twenty-two".