20100395146 has 32 divisors (see below), whose sum is σ = 35357414400. Its totient is φ = 8485767360.

The previous prime is 20100395143. The next prime is 20100395149. The reversal of 20100395146 is 64159300102.

It is an interprime number because it is at equal distance from previous prime (20100395143) and next prime (20100395149).

It is a super-2 number, since 2×20100395146² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20100395141) 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, 687210 + ... + 715861.

It is an arithmetic number, because the mean of its divisors is an integer number (1104919200).

Almost surely, 2^20100395146 is an apocalyptic number.

20100395146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20100395146 is a deficient number, since it is larger than the sum of its proper divisors (15257019254).

20100395146 is a wasteful number, since it uses less digits than its factorization.

20100395146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403134.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 20100395146 its reverse (64159300102), we get a palindrome (84259695248).

The spelling of 20100395146 in words is "twenty billion, one hundred million, three hundred ninety-five thousand, one hundred forty-six".