1897829142 has 16 divisors (see below), whose sum is σ = 4140718272. Its totient is φ = 575099720.

The previous prime is 1897829137. The next prime is 1897829189. The reversal of 1897829142 is 2419287981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14377428 + ... + 14377559.

It is an arithmetic number, because the mean of its divisors is an integer number (258794892).

Almost surely, 2^1897829142 is an apocalyptic number.

1897829142 is an abundant number, since it is smaller than the sum of its proper divisors (2242889130).

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

1897829142 is a wasteful number, since it uses less digits than its factorization.

1897829142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28755003.

The product of its digits is 580608, while the sum is 51.

The square root of 1897829142 is about 43564.0808694502. The cubic root of 1897829142 is about 1238.0904405765.

The spelling of 1897829142 in words is "one billion, eight hundred ninety-seven million, eight hundred twenty-nine thousand, one hundred forty-two".