1351229938 has 16 divisors (see below), whose sum is σ = 2147482584. Its totient is φ = 635454720.

The previous prime is 1351229933. The next prime is 1351229941. The reversal of 1351229938 is 8399221531.

It can be written as a sum of positive squares in 4 ways, for example, as 1265722929 + 85507009 = 35577^2 + 9247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1351229894 and 1351229903.

It is not an unprimeable number, because it can be changed into a prime (1351229933) 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, 42856 + ... + 67372.

Almost surely, 2^1351229938 is an apocalyptic number.

1351229938 is a deficient number, since it is larger than the sum of its proper divisors (796252646).

1351229938 is a wasteful number, since it uses less digits than its factorization.

1351229938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26157.

The product of its digits is 116640, while the sum is 43.

The square root of 1351229938 is about 36759.0796674781. The cubic root of 1351229938 is about 1105.5449869979.

The spelling of 1351229938 in words is "one billion, three hundred fifty-one million, two hundred twenty-nine thousand, nine hundred thirty-eight".