1909734442 has 32 divisors (see below), whose sum is σ = 3630017664. Its totient is φ = 731851200.

The previous prime is 1909734401. The next prime is 1909734461. The reversal of 1909734442 is 2444379091.

It is a super-2 number, since 2×1909734442² = 7294171277922102728, which contains 22 as substring.

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, 92253 + ... + 111040.

It is an arithmetic number, because the mean of its divisors is an integer number (113438052).

Almost surely, 2^1909734442 is an apocalyptic number.

1909734442 is a deficient number, since it is larger than the sum of its proper divisors (1720283222).

1909734442 is a wasteful number, since it uses less digits than its factorization.

1909734442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203374.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1909734442 is about 43700.5084867442. The cubic root of 1909734442 is about 1240.6739403586.

The spelling of 1909734442 in words is "one billion, nine hundred nine million, seven hundred thirty-four thousand, four hundred forty-two".