851490953 has 8 divisors (see below), whose sum is σ = 904660680. Its totient is φ = 799908480.

The previous prime is 851490877. The next prime is 851490967. The reversal of 851490953 is 359094158.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 352951369 + 498539584 = 18787^2 + 22328^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 851490953 - 2⁸ = 851490697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851490053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395708 + ... + 397853.

It is an arithmetic number, because the mean of its divisors is an integer number (113082585).

Almost surely, 2^851490953 is an apocalyptic number.

It is an amenable number.

851490953 is a deficient number, since it is larger than the sum of its proper divisors (53169727).

851490953 is a wasteful number, since it uses less digits than its factorization.

851490953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793627.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 851490953 is about 29180.3179043683. The cubic root of 851490953 is about 947.8217695195.

The spelling of 851490953 in words is "eight hundred fifty-one million, four hundred ninety thousand, nine hundred fifty-three".