1919435942 has 4 divisors (see below), whose sum is σ = 2879153916. Its totient is φ = 959717970.

The previous prime is 1919435923. The next prime is 1919435953. The reversal of 1919435942 is 2495349191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2495349191 = 1097 ⋅2274703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479858984 + ... + 479858987.

It is an arithmetic number, because the mean of its divisors is an integer number (719788479).

Almost surely, 2^1919435942 is an apocalyptic number.

1919435942 is a deficient number, since it is larger than the sum of its proper divisors (959717974).

1919435942 is an equidigital number, since it uses as much as digits as its factorization.

1919435942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959717973.

The product of its digits is 349920, while the sum is 47.

The square root of 1919435942 is about 43811.3677257399. The cubic root of 1919435942 is about 1242.7712780056.

The spelling of 1919435942 in words is "one billion, nine hundred nineteen million, four hundred thirty-five thousand, nine hundred forty-two".