2900121985 has 8 divisors (see below), whose sum is σ = 3480707520. Its totient is φ = 2319723504.

The previous prime is 2900121949. The next prime is 2900121989. The reversal of 2900121985 is 5891210092.

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 2900121985 - 2¹⁷ = 2899990913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2900121989) 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, 10027 + ... + 76816.

It is an arithmetic number, because the mean of its divisors is an integer number (435088440).

Almost surely, 2^2900121985 is an apocalyptic number.

It is an amenable number.

2900121985 is a deficient number, since it is larger than the sum of its proper divisors (580585535).

2900121985 is an equidigital number, since it uses as much as digits as its factorization.

2900121985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93527.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 2900121985 is about 53852.7806617263. The cubic root of 2900121985 is about 1426.0631417900.

The spelling of 2900121985 in words is "two billion, nine hundred million, one hundred twenty-one thousand, nine hundred eighty-five".