1385320526 has 4 divisors (see below), whose sum is σ = 2077980792. Its totient is φ = 692660262.

The previous prime is 1385320513. The next prime is 1385320543. The reversal of 1385320526 is 6250235831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6250235831 = 7 ⋅892890833.

It is a super-2 number, since 2×1385320526² = 3838225919513833352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346330130 + ... + 346330133.

It is an arithmetic number, because the mean of its divisors is an integer number (519495198).

Almost surely, 2^1385320526 is an apocalyptic number.

1385320526 is a deficient number, since it is larger than the sum of its proper divisors (692660266).

1385320526 is an equidigital number, since it uses as much as digits as its factorization.

1385320526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692660265.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1385320526 is about 37219.8942233854. The cubic root of 1385320526 is about 1114.7652521149.

The spelling of 1385320526 in words is "one billion, three hundred eighty-five million, three hundred twenty thousand, five hundred twenty-six".