1955552940 has 144 divisors (see below), whose sum is σ = 6694440480. Its totient is φ = 457712640.

The previous prime is 1955552939. The next prime is 1955552947. The reversal of 1955552940 is 492555591.

1955552940 is a `hidden beast` number, since 1 + 9 + 5 + 5 + 552 + 94 + 0 = 666.

It is a super-2 number, since 2×1955552940² = 7648374602285287200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1955552947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40392 + ... + 74448.

It is an arithmetic number, because the mean of its divisors is an integer number (46489170).

Almost surely, 2^1955552940 is an apocalyptic number.

1955552940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1955552940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3347220240).

1955552940 is an abundant number, since it is smaller than the sum of its proper divisors (4738887540).

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

1955552940 is a wasteful number, since it uses less digits than its factorization.

1955552940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34112 (or 34107 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 45.

The square root of 1955552940 is about 44221.6342981577. The cubic root of 1955552940 is about 1250.5177460549.

The spelling of 1955552940 in words is "one billion, nine hundred fifty-five million, five hundred fifty-two thousand, nine hundred forty".