1980554151 has 4 divisors (see below), whose sum is σ = 2640738872. Its totient is φ = 1320369432.

The previous prime is 1980554141. The next prime is 1980554183. The reversal of 1980554151 is 1514550891.

It is a happy number.

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

It is not a de Polignac number, because 1980554151 - 2⁵ = 1980554119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980554141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330092356 + ... + 330092361.

It is an arithmetic number, because the mean of its divisors is an integer number (660184718).

Almost surely, 2^1980554151 is an apocalyptic number.

1980554151 is a deficient number, since it is larger than the sum of its proper divisors (660184721).

1980554151 is an equidigital number, since it uses as much as digits as its factorization.

1980554151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660184720.

The product of its (nonzero) digits is 36000, while the sum is 39.

The square root of 1980554151 is about 44503.4172957538. The cubic root of 1980554151 is about 1255.8243714206.

The spelling of 1980554151 in words is "one billion, nine hundred eighty million, five hundred fifty-four thousand, one hundred fifty-one".