813948141 has 4 divisors (see below), whose sum is σ = 1085264192. Its totient is φ = 542632092.

The previous prime is 813948137. The next prime is 813948167. The reversal of 813948141 is 141849318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 813948141 - 2² = 813948137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 813948141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813948101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135658021 + ... + 135658026.

It is an arithmetic number, because the mean of its divisors is an integer number (271316048).

Almost surely, 2^813948141 is an apocalyptic number.

It is an amenable number.

813948141 is a deficient number, since it is larger than the sum of its proper divisors (271316051).

813948141 is a wasteful number, since it uses less digits than its factorization.

813948141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271316050.

The product of its digits is 27648, while the sum is 39.

The square root of 813948141 is about 28529.7763923940. The cubic root of 813948141 is about 933.6818399053.

It can be divided in two parts, 8139 and 48141, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 813948141 in words is "eight hundred thirteen million, nine hundred forty-eight thousand, one hundred forty-one".