1385024945 has 8 divisors (see below), whose sum is σ = 1662437544. Its totient is φ = 1107748224.

The previous prime is 1385024939. The next prime is 1385024957. The reversal of 1385024945 is 5494205831.

It can be written as a sum of positive squares in 4 ways, for example, as 976500001 + 408524944 = 31249^2 + 20212^2 .

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 1385024945 - 2¹² = 1385020849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10004 + ... + 53573.

It is an arithmetic number, because the mean of its divisors is an integer number (207804693).

Almost surely, 2^1385024945 is an apocalyptic number.

It is an amenable number.

1385024945 is a deficient number, since it is larger than the sum of its proper divisors (277412599).

1385024945 is an equidigital number, since it uses as much as digits as its factorization.

1385024945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67939.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1385024945 is about 37215.9232721694. The cubic root of 1385024945 is about 1114.6859619531.

The spelling of 1385024945 in words is "one billion, three hundred eighty-five million, twenty-four thousand, nine hundred forty-five".