1445148947 has 4 divisors (see below), whose sum is σ = 1576526136. Its totient is φ = 1313771760.

The previous prime is 1445148883. The next prime is 1445148983. The reversal of 1445148947 is 7498415441.

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

It is a cyclic number.

It is not a de Polignac number, because 1445148947 - 2⁶ = 1445148883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445148647) 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, 65688578 + ... + 65688599.

It is an arithmetic number, because the mean of its divisors is an integer number (394131534).

Almost surely, 2^1445148947 is an apocalyptic number.

1445148947 is a deficient number, since it is larger than the sum of its proper divisors (131377189).

1445148947 is a wasteful number, since it uses less digits than its factorization.

1445148947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131377188.

The product of its digits is 645120, while the sum is 47.

The square root of 1445148947 is about 38015.1147177014. The cubic root of 1445148947 is about 1130.5875627086.

The spelling of 1445148947 in words is "one billion, four hundred forty-five million, one hundred forty-eight thousand, nine hundred forty-seven".