1953955542 has 64 divisors (see below), whose sum is σ = 4878618624. Its totient is φ = 506852640.

The previous prime is 1953955541. The next prime is 1953955543. The reversal of 1953955542 is 2455593591.

It is an interprime number because it is at equal distance from previous prime (1953955541) and next prime (1953955543).

It is a super-2 number, since 2×1953955542² = 7635884520225027528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1953955491 and 1953955500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953955541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 416703 + ... + 421365.

It is an arithmetic number, because the mean of its divisors is an integer number (76228416).

Almost surely, 2^1953955542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1953955542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2439309312).

1953955542 is an abundant number, since it is smaller than the sum of its proper divisors (2924663082).

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

1953955542 is a wasteful number, since it uses less digits than its factorization.

1953955542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593.

The product of its digits is 1215000, while the sum is 48.

The square root of 1953955542 is about 44203.5693355186. The cubic root of 1953955542 is about 1250.1771571844.

The spelling of 1953955542 in words is "one billion, nine hundred fifty-three million, nine hundred fifty-five thousand, five hundred forty-two".