1980454 has 8 divisors (see below), whose sum is σ = 3395088. Its totient is φ = 848760.

The previous prime is 1980443. The next prime is 1980469. The reversal of 1980454 is 4540891.

It is a happy number.

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

It is a super-2 number, since 2×1980454² = 7844396092232, which contains 22 as substring.

It is a congruent number.

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, 70717 + ... + 70744.

It is an arithmetic number, because the mean of its divisors is an integer number (424386).

2^1980454 is an apocalyptic number.

1980454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1980454 is a deficient number, since it is larger than the sum of its proper divisors (1414634).

1980454 is a wasteful number, since it uses less digits than its factorization.

1980454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141470.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1980454 is about 1407.2860405760. The cubic root of 1980454 is about 125.5803203239.

It can be divided in two parts, 19 and 80454, that multiplied together give a triangular number (1528626 = T₁₇₄₈).

The spelling of 1980454 in words is "one million, nine hundred eighty thousand, four hundred fifty-four".