1949743098 has 24 divisors (see below), whose sum is σ = 4242899700. Its totient is φ = 647074944.

The previous prime is 1949743031. The next prime is 1949743099. The reversal of 1949743098 is 8903479491.

It can be written as a sum of positive squares in 2 ways, for example, as 1497457809 + 452285289 = 38697^2 + 21267^2 .

It is not an unprimeable number, because it can be changed into a prime (1949743099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232383 + ... + 240626.

Almost surely, 2^1949743098 is an apocalyptic number.

1949743098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1949743098 is an abundant number, since it is smaller than the sum of its proper divisors (2293156602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1949743098 is a wasteful number, since it uses less digits than its factorization.

1949743098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473246 (or 473243 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 1949743098 is about 44155.8953934806. The cubic root of 1949743098 is about 1249.2781107543.

The spelling of 1949743098 in words is "one billion, nine hundred forty-nine million, seven hundred forty-three thousand, ninety-eight".