191383642 has 16 divisors (see below), whose sum is σ = 290946600. Its totient is φ = 94406400.

The previous prime is 191383639. The next prime is 191383651. The reversal of 191383642 is 246383191.

It can be written as a sum of positive squares in 4 ways, for example, as 189585361 + 1798281 = 13769^2 + 1341^2 .

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, 106084 + ... + 107872.

Almost surely, 2^191383642 is an apocalyptic number.

191383642 is a deficient number, since it is larger than the sum of its proper divisors (99562958).

191383642 is a wasteful number, since it uses less digits than its factorization.

191383642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its digits is 31104, while the sum is 37.

The square root of 191383642 is about 13834.1476788417. The cubic root of 191383642 is about 576.2818454928.

The spelling of 191383642 in words is "one hundred ninety-one million, three hundred eighty-three thousand, six hundred forty-two".