2190155004 has 48 divisors (see below), whose sum is σ = 5977036800. Its totient is φ = 691627248.

The previous prime is 2190154997. The next prime is 2190155017. The reversal of 2190155004 is 4005510912.

2190155004 is a `hidden beast` number, since 21 + 90 + 1 + 550 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531612 + ... + 535715.

It is an arithmetic number, because the mean of its divisors is an integer number (124521600).

Almost surely, 2^2190155004 is an apocalyptic number.

It is an amenable number.

2190155004 is an abundant number, since it is smaller than the sum of its proper divisors (3786881796).

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

2190155004 is a wasteful number, since it uses less digits than its factorization.

2190155004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067359 (or 1067351 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 2190155004 is about 46799.0919142669. The cubic root of 2190155004 is about 1298.6484976114.

Adding to 2190155004 its reverse (4005510912), we get a palindrome (6195665916).

It can be divided in two parts, 21 and 90155004, that added together give a square (90155025 = 9495²).

The spelling of 2190155004 in words is "two billion, one hundred ninety million, one hundred fifty-five thousand, four".