1098870739 has 4 divisors (see below), whose sum is σ = 1099030824. Its totient is φ = 1098710656.

The previous prime is 1098870737. The next prime is 1098870749. The reversal of 1098870739 is 9370788901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1098870739 - 2¹ = 1098870737 is a prime.

It is a super-2 number, since 2×1098870739² = 2415033802060812242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098870737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69262 + ... + 83635.

It is an arithmetic number, because the mean of its divisors is an integer number (274757706).

Almost surely, 2^1098870739 is an apocalyptic number.

1098870739 is a deficient number, since it is larger than the sum of its proper divisors (160085).

1098870739 is an equidigital number, since it uses as much as digits as its factorization.

1098870739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160084.

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 1098870739 is about 33149.2192819077. The cubic root of 1098870739 is about 1031.9267479380.

The spelling of 1098870739 in words is "one billion, ninety-eight million, eight hundred seventy thousand, seven hundred thirty-nine".