1913385 has 16 divisors (see below), whose sum is σ = 3081600. Its totient is φ = 1013760.

The previous prime is 1913377. The next prime is 1913389. The reversal of 1913385 is 5833191.

It is a happy number.

It is not a de Polignac number, because 1913385 - 2³ = 1913377 is a prime.

It is a super-2 number, since 2×1913385² = 7322084316450, which contains 22 as substring.

1913385 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2665 + ... + 3305.

It is an arithmetic number, because the mean of its divisors is an integer number (192600).

2^1913385 is an apocalyptic number.

1913385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1913385 is a deficient number, since it is larger than the sum of its proper divisors (1168215).

1913385 is a wasteful number, since it uses less digits than its factorization.

1913385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 3240, while the sum is 30.

The square root of 1913385 is about 1383.2516040114. The cubic root of 1913385 is about 124.1463975042.

The spelling of 1913385 in words is "one million, nine hundred thirteen thousand, three hundred eighty-five".