1613400787 has 2 divisors, whose sum is σ = 1613400788. Its totient is φ = 1613400786.

The previous prime is 1613400707. The next prime is 1613400791. The reversal of 1613400787 is 7870043161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1613400787 - 2¹¹ = 1613398739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613400707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806700393 + 806700394.

It is an arithmetic number, because the mean of its divisors is an integer number (806700394).

Almost surely, 2^1613400787 is an apocalyptic number.

1613400787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613400787 is an equidigital number, since it uses as much as digits as its factorization.

1613400787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1613400787 is about 40167.1605543633. The cubic root of 1613400787 is about 1172.8633660862.

The spelling of 1613400787 in words is "one billion, six hundred thirteen million, four hundred thousand, seven hundred eighty-seven".