9749961626 has 4 divisors (see below), whose sum is σ = 14624942442. Its totient is φ = 4874980812.

The previous prime is 9749961593. The next prime is 9749961629. The reversal of 9749961626 is 6261699479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6261699479 = 7 ⋅894528497.

It can be written as a sum of positive squares in only one way, i.e., 9742677025 + 7284601 = 98705^2 + 2699^2 .

It is not an unprimeable number, because it can be changed into a prime (9749961629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2437490405 + ... + 2437490408.

Almost surely, 2^9749961626 is an apocalyptic number.

9749961626 is a deficient number, since it is larger than the sum of its proper divisors (4874980816).

9749961626 is a wasteful number, since it uses less digits than its factorization.

9749961626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874980815.

The product of its digits is 8817984, while the sum is 59.

The square root of 9749961626 is about 98741.8939761639. The cubic root of 9749961626 is about 2136.3265381273.

The spelling of 9749961626 in words is "nine billion, seven hundred forty-nine million, nine hundred sixty-one thousand, six hundred twenty-six".