1954955831 has 4 divisors (see below), whose sum is σ = 1970349312. Its totient is φ = 1939562352.

The previous prime is 1954955813. The next prime is 1954955881. The reversal of 1954955831 is 1385594591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1385594591 = 32173 ⋅43067.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1954955831 is a prime.

It is a super-2 number, since 2×1954955831² = 7643704602321801122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1954955831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954955881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7696550 + ... + 7696803.

It is an arithmetic number, because the mean of its divisors is an integer number (492587328).

Almost surely, 2^1954955831 is an apocalyptic number.

1954955831 is a deficient number, since it is larger than the sum of its proper divisors (15393481).

1954955831 is a wasteful number, since it uses less digits than its factorization.

1954955831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393480.

The product of its digits is 972000, while the sum is 50.

The square root of 1954955831 is about 44214.8824605472. The cubic root of 1954955831 is about 1250.3904553030.

The spelling of 1954955831 in words is "one billion, nine hundred fifty-four million, nine hundred fifty-five thousand, eight hundred thirty-one".