1098274158 has 24 divisors (see below), whose sum is σ = 2404129728. Its totient is φ = 362316672.

The previous prime is 1098274147. The next prime is 1098274183. The reversal of 1098274158 is 8514728901.

It is a super-2 number, since 2×1098274158² = 2412412252261217928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312766 + ... + 316257.

It is an arithmetic number, because the mean of its divisors is an integer number (100172072).

Almost surely, 2^1098274158 is an apocalyptic number.

1098274158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1098274158 is an abundant number, since it is smaller than the sum of its proper divisors (1305855570).

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

1098274158 is a wasteful number, since it uses less digits than its factorization.

1098274158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629128 (or 629125 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1098274158 is about 33140.2196432070. The cubic root of 1098274158 is about 1031.7399685132.

The spelling of 1098274158 in words is "one billion, ninety-eight million, two hundred seventy-four thousand, one hundred fifty-eight".