20086349490 has 128 divisors (see below), whose sum is σ = 56881440000. Its totient is φ = 5026434048.

The previous prime is 20086349471. The next prime is 20086349611. The reversal of 20086349490 is 9494368002.

20086349490 is a `hidden beast` number, since 2 + 0 + 0 + 8 + 634 + 9 + 4 + 9 + 0 = 666.

It is a super-2 number, since 2×20086349490² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1595641 + ... + 1608179.

It is an arithmetic number, because the mean of its divisors is an integer number (444386250).

Almost surely, 2^20086349490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20086349490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28440720000).

20086349490 is an abundant number, since it is smaller than the sum of its proper divisors (36795090510).

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

20086349490 is a wasteful number, since it uses less digits than its factorization.

20086349490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12921 (or 12915 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 20086349490 in words is "twenty billion, eighty-six million, three hundred forty-nine thousand, four hundred ninety".