1445538131 has 4 divisors (see below), whose sum is σ = 1445647200. Its totient is φ = 1445429064.

The previous prime is 1445538047. The next prime is 1445538137. The reversal of 1445538131 is 1318355441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1318355441 = 13 ⋅101411957.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445538131 is a prime.

It is a super-2 number, since 2×1445538131² = 4179160976349946322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1445538091 and 1445538100.

It is not an unprimeable number, because it can be changed into a prime (1445538137) 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, 31376 + ... + 62253.

It is an arithmetic number, because the mean of its divisors is an integer number (361411800).

Almost surely, 2^1445538131 is an apocalyptic number.

1445538131 is a deficient number, since it is larger than the sum of its proper divisors (109069).

1445538131 is an equidigital number, since it uses as much as digits as its factorization.

1445538131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109068.

The product of its digits is 28800, while the sum is 35.

The square root of 1445538131 is about 38020.2331791903. The cubic root of 1445538131 is about 1130.6890440814.

The spelling of 1445538131 in words is "one billion, four hundred forty-five million, five hundred thirty-eight thousand, one hundred thirty-one".