9142535861 has 4 divisors (see below), whose sum is σ = 9223443372. Its totient is φ = 9061628352.

The previous prime is 9142535807. The next prime is 9142535863. The reversal of 9142535861 is 1685352419.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4774119025 + 4368416836 = 69095^2 + 66094^2 .

It is a cyclic number.

It is not a de Polignac number, because 9142535861 - 2⁶ = 9142535797 is a prime.

It is a super-2 number, since 2×9142535861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9142535863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40453586 + ... + 40453811.

It is an arithmetic number, because the mean of its divisors is an integer number (2305860843).

Almost surely, 2^9142535861 is an apocalyptic number.

It is an amenable number.

9142535861 is a deficient number, since it is larger than the sum of its proper divisors (80907511).

9142535861 is a wasteful number, since it uses less digits than its factorization.

9142535861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80907510.

The product of its digits is 259200, while the sum is 44.

The square root of 9142535861 is about 95616.6087089476. The cubic root of 9142535861 is about 2091.0073409175.

The spelling of 9142535861 in words is "nine billion, one hundred forty-two million, five hundred thirty-five thousand, eight hundred sixty-one".