1561367434 has 16 divisors (see below), whose sum is σ = 2556393696. Its totient is φ = 709315600.

The previous prime is 1561367429. The next prime is 1561367447. The reversal of 1561367434 is 4347631651.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 22389 + ... + 60199.

It is an arithmetic number, because the mean of its divisors is an integer number (159774606).

Almost surely, 2^1561367434 is an apocalyptic number.

1561367434 is a deficient number, since it is larger than the sum of its proper divisors (995026262).

1561367434 is a wasteful number, since it uses less digits than its factorization.

1561367434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39701.

The product of its digits is 181440, while the sum is 40.

The square root of 1561367434 is about 39514.1422025077. The cubic root of 1561367434 is about 1160.1167723310.

The spelling of 1561367434 in words is "one billion, five hundred sixty-one million, three hundred sixty-seven thousand, four hundred thirty-four".