1955134780 has 24 divisors (see below), whose sum is σ = 4284296352. Its totient is φ = 748051392.

The previous prime is 1955134747. The next prime is 1955134787. The reversal of 1955134780 is 874315591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955134787) 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 7 ways as a sum of consecutive naturals, for example, 2124687 + ... + 2125606.

It is an arithmetic number, because the mean of its divisors is an integer number (178512348).

Almost surely, 2^1955134780 is an apocalyptic number.

1955134780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1955134780 is an abundant number, since it is smaller than the sum of its proper divisors (2329161572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1955134780 is a wasteful number, since it uses less digits than its factorization.

1955134780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250325 (or 4250323 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1955134780 is about 44216.9060428248. The cubic root of 1955134780 is about 1250.4286060873.

The spelling of 1955134780 in words is "one billion, nine hundred fifty-five million, one hundred thirty-four thousand, seven hundred eighty".