1909374098 has 4 divisors (see below), whose sum is σ = 2864061150. Its totient is φ = 954687048.

The previous prime is 1909374073. The next prime is 1909374101. The reversal of 1909374098 is 8904739091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8904739091 = 1613 ⋅5520607.

It can be written as a sum of positive squares in only one way, i.e., 1253655649 + 655718449 = 35407^2 + 25607^2 .

It is a super-2 number, since 2×1909374098² = 7291418892226627208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477343523 + ... + 477343526.

Almost surely, 2^1909374098 is an apocalyptic number.

1909374098 is a deficient number, since it is larger than the sum of its proper divisors (954687052).

1909374098 is an equidigital number, since it uses as much as digits as its factorization.

1909374098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954687051.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1909374098 is about 43696.3854111527. The cubic root of 1909374098 is about 1240.5959020160.

The spelling of 1909374098 in words is "one billion, nine hundred nine million, three hundred seventy-four thousand, ninety-eight".