1004391890155 has 8 divisors (see below), whose sum is σ = 1205530220592. Its totient is φ = 803340210528.

The previous prime is 1004391890153. The next prime is 1004391890171. The reversal of 1004391890155 is 5510981934001.

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

It is a cyclic number.

It is not a de Polignac number, because 1004391890155 - 2¹ = 1004391890153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004391890153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21637197 + ... + 21683566.

It is an arithmetic number, because the mean of its divisors is an integer number (150691277574).

Almost surely, 2^{1004391890155} is an apocalyptic number.

1004391890155 is a deficient number, since it is larger than the sum of its proper divisors (201138330437).

1004391890155 is an equidigital number, since it uses as much as digits as its factorization.

1004391890155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43325405.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 1004391890155 in words is "one trillion, four billion, three hundred ninety-one million, eight hundred ninety thousand, one hundred fifty-five".