1999541434 has 32 divisors (see below), whose sum is σ = 3341108736. Its totient is φ = 889846320.

The previous prime is 1999541431. The next prime is 1999541443. The reversal of 1999541434 is 4341459991.

It is not an unprimeable number, because it can be changed into a prime (1999541431) 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, 242097 + ... + 250219.

It is an arithmetic number, because the mean of its divisors is an integer number (104409648).

Almost surely, 2^1999541434 is an apocalyptic number.

1999541434 is a deficient number, since it is larger than the sum of its proper divisors (1341567302).

1999541434 is a wasteful number, since it uses less digits than its factorization.

1999541434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370.

The product of its digits is 699840, while the sum is 49.

The square root of 1999541434 is about 44716.2323323421. The cubic root of 1999541434 is about 1259.8247497085.

The spelling of 1999541434 in words is "one billion, nine hundred ninety-nine million, five hundred forty-one thousand, four hundred thirty-four".