1385401051 has 4 divisors (see below), whose sum is σ = 1390513504. Its totient is φ = 1380288600.

The previous prime is 1385401033. The next prime is 1385401099. The reversal of 1385401051 is 1501045831.

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 1385401051 - 2⁵ = 1385401019 is a prime.

It is a super-2 number, since 2×1385401051² = 3838672144223809202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385401351) 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, 2555820 + ... + 2556361.

It is an arithmetic number, because the mean of its divisors is an integer number (347628376).

Almost surely, 2^1385401051 is an apocalyptic number.

1385401051 is a deficient number, since it is larger than the sum of its proper divisors (5112453).

1385401051 is an equidigital number, since it uses as much as digits as its factorization.

1385401051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112452.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1385401051 is about 37220.9759544266. The cubic root of 1385401051 is about 1114.7868511434.

Adding to 1385401051 its reverse (1501045831), we get a palindrome (2886446882).

The spelling of 1385401051 in words is "one billion, three hundred eighty-five million, four hundred one thousand, fifty-one".