1001091609158 has 4 divisors (see below), whose sum is σ = 1501637413740. Its totient is φ = 500545804578.

The previous prime is 1001091609127. The next prime is 1001091609173. The reversal of 1001091609158 is 8519061901001.

It is a happy number.

1001091609158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250272902288 + ... + 250272902291.

It is an arithmetic number, because the mean of its divisors is an integer number (375409353435).

Almost surely, 2^{1001091609158} is an apocalyptic number.

1001091609158 is a deficient number, since it is larger than the sum of its proper divisors (500545804582).

1001091609158 is an equidigital number, since it uses as much as digits as its factorization.

1001091609158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500545804581.

The product of its (nonzero) digits is 19440, while the sum is 41.

The spelling of 1001091609158 in words is "one trillion, one billion, ninety-one million, six hundred nine thousand, one hundred fifty-eight".