1980954435 has 16 divisors (see below), whose sum is σ = 3205141920. Its totient is φ = 1044637440.

The previous prime is 1980954431. The next prime is 1980954439. The reversal of 1980954435 is 5344590891.

It is an interprime number because it is at equal distance from previous prime (1980954431) and next prime (1980954439).

It is not a de Polignac number, because 1980954435 - 2² = 1980954431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1980954431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740596 + ... + 743265.

It is an arithmetic number, because the mean of its divisors is an integer number (200321370).

Almost surely, 2^1980954435 is an apocalyptic number.

1980954435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1980954435 is a deficient number, since it is larger than the sum of its proper divisors (1224187485).

1980954435 is a wasteful number, since it uses less digits than its factorization.

1980954435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483958.

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 1980954435 is about 44507.9142962238. The cubic root of 1980954435 is about 1255.9089693837.

The spelling of 1980954435 in words is "one billion, nine hundred eighty million, nine hundred fifty-four thousand, four hundred thirty-five".