20195351862 has 48 divisors (see below), whose sum is σ = 47755394352. Its totient is φ = 5675503680.

The previous prime is 20195351861. The next prime is 20195351863. The reversal of 20195351862 is 26815359102.

It is an interprime number because it is at equal distance from previous prime (20195351861) and next prime (20195351863).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20195351861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 545113 + ... + 580980.

It is an arithmetic number, because the mean of its divisors is an integer number (994904049).

Almost surely, 2^20195351862 is an apocalyptic number.

20195351862 is an abundant number, since it is smaller than the sum of its proper divisors (27560042490).

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

20195351862 is a wasteful number, since it uses less digits than its factorization.

20195351862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126173 (or 1126166 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 20195351862 in words is "twenty billion, one hundred ninety-five million, three hundred fifty-one thousand, eight hundred sixty-two".