1540913 has 8 divisors (see below), whose sum is σ = 1705536. Its totient is φ = 1380400.

The previous prime is 1540901. The next prime is 1540927. The reversal of 1540913 is 3190451.

It is a happy number.

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 1540913 - 2⁶ = 1540849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 1767.

It is an arithmetic number, because the mean of its divisors is an integer number (213192).

2^1540913 is an apocalyptic number.

It is an amenable number.

1540913 is a deficient number, since it is larger than the sum of its proper divisors (164623).

1540913 is a wasteful number, since it uses less digits than its factorization.

1540913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1540913 is about 1241.3351682765. The cubic root of 1540913 is about 115.5028515753.

Subtracting from 1540913 its sum of digits (23), we obtain a triangular number (1540890 = T₁₇₅₅).

The spelling of 1540913 in words is "one million, five hundred forty thousand, nine hundred thirteen".