2040157407 has 4 divisors (see below), whose sum is σ = 2720209880. Its totient is φ = 1360104936.

The previous prime is 2040157397. The next prime is 2040157409. The reversal of 2040157407 is 7047510402.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2040157407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040157409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340026232 + ... + 340026237.

It is an arithmetic number, because the mean of its divisors is an integer number (680052470).

Almost surely, 2^2040157407 is an apocalyptic number.

2040157407 is a deficient number, since it is larger than the sum of its proper divisors (680052473).

2040157407 is an equidigital number, since it uses as much as digits as its factorization.

2040157407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680052472.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 2040157407 is about 45168.1016537113. The cubic root of 2040157407 is about 1268.2977601418.

Adding to 2040157407 its reverse (7047510402), we get a palindrome (9087667809).

The spelling of 2040157407 in words is "two billion, forty million, one hundred fifty-seven thousand, four hundred seven".