1954687956 has 48 divisors (see below), whose sum is σ = 5031595968. Its totient is φ = 586771200.

The previous prime is 1954687951. The next prime is 1954687963. The reversal of 1954687956 is 6597864591.

It is a self number, because there is not a number n which added to its sum of digits gives 1954687956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954687951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146410 + ... + 159201.

It is an arithmetic number, because the mean of its divisors is an integer number (104824916).

Almost surely, 2^1954687956 is an apocalyptic number.

It is an amenable number.

1954687956 is an abundant number, since it is smaller than the sum of its proper divisors (3076908012).

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

1954687956 is a wasteful number, since it uses less digits than its factorization.

1954687956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305672 (or 305670 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 60.

The square root of 1954687956 is about 44211.8531165569. The cubic root of 1954687956 is about 1250.3333417121. Note that the first 4 decimals are identical.

The spelling of 1954687956 in words is "one billion, nine hundred fifty-four million, six hundred eighty-seven thousand, nine hundred fifty-six".