7478739954 has 72 divisors (see below), whose sum is σ = 19061469180. Its totient is φ = 2112751872.

The previous prime is 7478739923. The next prime is 7478739971. The reversal of 7478739954 is 4599378747.

7478739954 is a `hidden beast` number, since 7 + 478 + 73 + 9 + 95 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7366273929 + 112466025 = 85827^2 + 10605^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 7478739891 and 7478739900.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30862 + ... + 126134.

Almost surely, 2^7478739954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7478739954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9530734590).

7478739954 is an abundant number, since it is smaller than the sum of its proper divisors (11582729226).

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

7478739954 is a wasteful number, since it uses less digits than its factorization.

7478739954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95384 (or 95374 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The square root of 7478739954 is about 86479.7083366960. The cubic root of 7478739954 is about 1955.5825087235.

The spelling of 7478739954 in words is "seven billion, four hundred seventy-eight million, seven hundred thirty-nine thousand, nine hundred fifty-four".