1385545401 has 12 divisors (see below), whose sum is σ = 2055434212. Its totient is φ = 898731936.

The previous prime is 1385545397. The next prime is 1385545423. The reversal of 1385545401 is 1045455831.

It can be written as a sum of positive squares in 2 ways, for example, as 663011001 + 722534400 = 25749^2 + 26880^2 .

It is not a de Polignac number, because 1385545401 - 2² = 1385545397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1385545481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2080066 + ... + 2080731.

Almost surely, 2^1385545401 is an apocalyptic number.

It is an amenable number.

1385545401 is a deficient number, since it is larger than the sum of its proper divisors (669888811).

1385545401 is a wasteful number, since it uses less digits than its factorization.

1385545401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160840 (or 4160837 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1385545401 is about 37222.9149986940. The cubic root of 1385545401 is about 1114.8255677045.

The spelling of 1385545401 in words is "one billion, three hundred eighty-five million, five hundred forty-five thousand, four hundred one".