1955312128 has 80 divisors (see below), whose sum is σ = 4870920384. Its totient is φ = 761794560.

The previous prime is 1955312123. The next prime is 1955312131. The reversal of 1955312128 is 8212135591.

It is not an unprimeable number, because it can be changed into a prime (1955312123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14626 + ... + 64222.

Almost surely, 2^1955312128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1955312128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2435460192).

1955312128 is an abundant number, since it is smaller than the sum of its proper divisors (2915608256).

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

1955312128 is an equidigital number, since it uses as much as digits as its factorization.

1955312128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49633 (or 49617 counting only the distinct ones).

The product of its digits is 21600, while the sum is 37.

The square root of 1955312128 is about 44218.9114293873. The cubic root of 1955312128 is about 1250.4664132520.

The spelling of 1955312128 in words is "one billion, nine hundred fifty-five million, three hundred twelve thousand, one hundred twenty-eight".