1098140251 has 16 divisors (see below), whose sum is σ = 1211583744. Its totient is φ = 989122464.

The previous prime is 1098140237. The next prime is 1098140257. The reversal of 1098140251 is 1520418901.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1098140251 - 2⁷ = 1098140123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098140257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87306 + ... + 99088.

It is an arithmetic number, because the mean of its divisors is an integer number (75723984).

Almost surely, 2^1098140251 is an apocalyptic number.

1098140251 is a deficient number, since it is larger than the sum of its proper divisors (113443493).

1098140251 is a wasteful number, since it uses less digits than its factorization.

1098140251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1098140251 is about 33138.1992721391. The cubic root of 1098140251 is about 1031.6980352010.

The spelling of 1098140251 in words is "one billion, ninety-eight million, one hundred forty thousand, two hundred fifty-one".