1516402741 has 4 divisors (see below), whose sum is σ = 1733031712. Its totient is φ = 1299773772.

The previous prime is 1516402691. The next prime is 1516402763. The reversal of 1516402741 is 1472046151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1472046151 = 4651 ⋅316501.

It is a cyclic number.

It is not a de Polignac number, because 1516402741 - 2⁹ = 1516402229 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 (1516402781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108314475 + ... + 108314488.

It is an arithmetic number, because the mean of its divisors is an integer number (433257928).

Almost surely, 2^1516402741 is an apocalyptic number.

It is an amenable number.

1516402741 is a deficient number, since it is larger than the sum of its proper divisors (216628971).

1516402741 is an equidigital number, since it uses as much as digits as its factorization.

1516402741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216628970.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1516402741 is about 38941.0161783177. The cubic root of 1516402741 is about 1148.8716698530.

Adding to 1516402741 its reverse (1472046151), we get a palindrome (2988448892).

The spelling of 1516402741 in words is "one billion, five hundred sixteen million, four hundred two thousand, seven hundred forty-one".