15494861783 has 2 divisors, whose sum is σ = 15494861784. Its totient is φ = 15494861782.

The previous prime is 15494861777. The next prime is 15494861891. The reversal of 15494861783 is 38716849451.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15494861783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15494831783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7747430891 + 7747430892.

It is an arithmetic number, because the mean of its divisors is an integer number (7747430892).

Almost surely, 2^15494861783 is an apocalyptic number.

15494861783 is a deficient number, since it is larger than the sum of its proper divisors (1).

15494861783 is an equidigital number, since it uses as much as digits as its factorization.

15494861783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The spelling of 15494861783 in words is "fifteen billion, four hundred ninety-four million, eight hundred sixty-one thousand, seven hundred eighty-three".