9875445951 has 32 divisors (see below), whose sum is σ = 15705077760. Its totient is φ = 5400267264.

The previous prime is 9875445949. The next prime is 9875445961. The reversal of 9875445951 is 1595445789.

It is a happy number.

It is not a de Polignac number, because 9875445951 - 2¹ = 9875445949 is a prime.

It is a super-2 number, since 2×9875445951² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9875445891 and 9875445900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9875445941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2935 + ... + 140568.

It is an arithmetic number, because the mean of its divisors is an integer number (490783680).

Almost surely, 2^9875445951 is an apocalyptic number.

9875445951 is a deficient number, since it is larger than the sum of its proper divisors (5829631809).

9875445951 is a wasteful number, since it uses less digits than its factorization.

9875445951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143655.

The product of its digits is 9072000, while the sum is 57.

The square root of 9875445951 is about 99375.2783694214. The cubic root of 9875445951 is about 2145.4525084629.

The spelling of 9875445951 in words is "nine billion, eight hundred seventy-five million, four hundred forty-five thousand, nine hundred fifty-one".