1249221889158 has 32 divisors (see below), whose sum is σ = 2653214659200. Its totient is φ = 391000046976.

The previous prime is 1249221889081. The next prime is 1249221889159. The reversal of 1249221889158 is 8519881229421.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249221889159) 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, 48474228 + ... + 48499991.

It is an arithmetic number, because the mean of its divisors is an integer number (82912958100).

Almost surely, 2^{1249221889158} is an apocalyptic number.

1249221889158 is an abundant number, since it is smaller than the sum of its proper divisors (1403992770042).

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

1249221889158 is a wasteful number, since it uses less digits than its factorization.

1249221889158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96974356.

The product of its digits is 6635520, while the sum is 60.

The spelling of 1249221889158 in words is "one trillion, two hundred forty-nine billion, two hundred twenty-one million, eight hundred eighty-nine thousand, one hundred fifty-eight".