1980154 has 8 divisors (see below), whose sum is σ = 3240288. Its totient is φ = 900060.

The previous prime is 1980113. The next prime is 1980169. The reversal of 1980154 is 4510891.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44982 + ... + 45025.

It is an arithmetic number, because the mean of its divisors is an integer number (405036).

2^1980154 is an apocalyptic number.

1980154 is a deficient number, since it is larger than the sum of its proper divisors (1260134).

1980154 is a wasteful number, since it uses less digits than its factorization.

1980154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90020.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1980154 is about 1407.1794484002. The cubic root of 1980154 is about 125.5739790173.

The spelling of 1980154 in words is "one million, nine hundred eighty thousand, one hundred fifty-four".