1099251494 has 8 divisors (see below), whose sum is σ = 1798775208. Its totient is φ = 499659760.

The previous prime is 1099251493. The next prime is 1099251497. The reversal of 1099251494 is 4941529901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1099251494² = 2416707694122464072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099251493) 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, 24982967 + ... + 24983010.

It is an arithmetic number, because the mean of its divisors is an integer number (224846901).

Almost surely, 2^1099251494 is an apocalyptic number.

1099251494 is a deficient number, since it is larger than the sum of its proper divisors (699523714).

1099251494 is a wasteful number, since it uses less digits than its factorization.

1099251494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49965990.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1099251494 is about 33154.9618307728. The cubic root of 1099251494 is about 1032.0459205525.

The spelling of 1099251494 in words is "one billion, ninety-nine million, two hundred fifty-one thousand, four hundred ninety-four".