39718454490 has 288 divisors, whose sum is σ = 126780571008. Its totient is φ = 8887190400.

The previous prime is 39718454473. The next prime is 39718454533. The reversal of 39718454490 is 9445481793.

39718454490 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 8 + 4 + 544 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3817195 + ... + 3827585.

It is an arithmetic number, because the mean of its divisors is an integer number (440210316).

Almost surely, 2^39718454490 is an apocalyptic number.

39718454490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39718454490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63390285504).

39718454490 is an abundant number, since it is smaller than the sum of its proper divisors (87062116518).

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

39718454490 is a wasteful number, since it uses less digits than its factorization.

39718454490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10448 (or 10425 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 39718454490 in words is "thirty-nine billion, seven hundred eighteen million, four hundred fifty-four thousand, four hundred ninety".