1921190674 has 8 divisors (see below), whose sum is σ = 3103461900. Its totient is φ = 886703376.

The previous prime is 1921190657. The next prime is 1921190707. The reversal of 1921190674 is 4760911291.

It can be written as a sum of positive squares in 2 ways, for example, as 1756196649 + 164994025 = 41907^2 + 12845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36945949 + ... + 36946000.

Almost surely, 2^1921190674 is an apocalyptic number.

1921190674 is a deficient number, since it is larger than the sum of its proper divisors (1182271226).

1921190674 is a wasteful number, since it uses less digits than its factorization.

1921190674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73891964.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1921190674 is about 43831.3891406604. The cubic root of 1921190674 is about 1243.1498729676.

The spelling of 1921190674 in words is "one billion, nine hundred twenty-one million, one hundred ninety thousand, six hundred seventy-four".