1955417156 has 48 divisors (see below), whose sum is σ = 4275089280. Its totient is φ = 760293120.

The previous prime is 1955417153. The next prime is 1955417161. The reversal of 1955417156 is 6517145591.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (1955417153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150536 + ... + 163008.

It is an arithmetic number, because the mean of its divisors is an integer number (89064360).

Almost surely, 2^1955417156 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 1955417156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2137544640).

1955417156 is an abundant number, since it is smaller than the sum of its proper divisors (2319672124).

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

1955417156 is a wasteful number, since it uses less digits than its factorization.

1955417156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13004 (or 13002 counting only the distinct ones).

The product of its digits is 189000, while the sum is 44.

The square root of 1955417156 is about 44220.0990048643. The cubic root of 1955417156 is about 1250.4888021131.

The spelling of 1955417156 in words is "one billion, nine hundred fifty-five million, four hundred seventeen thousand, one hundred fifty-six".