20146900249 has 16 divisors (see below), whose sum is σ = 24241351680. Its totient is φ = 16356865680.

The previous prime is 20146900237. The next prime is 20146900253. The reversal of 20146900249 is 94200964102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20146900249 - 2⁷ = 20146900121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20146900259) 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, 964692 + ... + 985354.

It is an arithmetic number, because the mean of its divisors is an integer number (1515084480).

Almost surely, 2^20146900249 is an apocalyptic number.

It is an amenable number.

20146900249 is a deficient number, since it is larger than the sum of its proper divisors (4094451431).

20146900249 is a wasteful number, since it uses less digits than its factorization.

20146900249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28020.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 20146900249 in words is "twenty billion, one hundred forty-six million, nine hundred thousand, two hundred forty-nine".