1894129542 has 32 divisors (see below), whose sum is σ = 4216116960. Its totient is φ = 630335520.

The previous prime is 1894129537. The next prime is 1894129651. The reversal of 1894129542 is 2459214981.

It is a happy number.

1894129542 is a `hidden beast` number, since 1 + 8 + 94 + 12 + 9 + 542 = 666.

1894129542 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4492 + ... + 61712.

It is an arithmetic number, because the mean of its divisors is an integer number (131753655).

Almost surely, 2^1894129542 is an apocalyptic number.

1894129542 is an abundant number, since it is smaller than the sum of its proper divisors (2321987418).

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

1894129542 is a wasteful number, since it uses less digits than its factorization.

1894129542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57845 (or 57839 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1894129542 is about 43521.5985689864. The cubic root of 1894129542 is about 1237.2854121948.

The spelling of 1894129542 in words is "one billion, eight hundred ninety-four million, one hundred twenty-nine thousand, five hundred forty-two".