1418049649 has 3 divisors (see below), whose sum is σ = 1418087307. Its totient is φ = 1418011992.

The previous prime is 1418049631. The next prime is 1418049653. The reversal of 1418049649 is 9469408141.

The square root of 1418049649 is 37657.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9469408141 = 25033 ⋅378277.

It can be written as a sum of positive squares in only one way, i.e., 1141426225 + 276623424 = 33785^2 + 16632^2 .

It is not a de Polignac number, because 1418049649 - 2⁹ = 1418049137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1418049599 and 1418049608.

It is not an unprimeable number, because it can be changed into a prime (1418047649) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18829 + ... + 56485.

It is an arithmetic number, because the mean of its divisors is an integer number (472695769).

Almost surely, 2^1418049649 is an apocalyptic number.

1418049649 is the 37657-th square number.

1418049649 is the 18829-th centered octagonal number.

It is an amenable number.

1418049649 is a deficient number, since it is larger than the sum of its proper divisors (37658).

1418049649 is an frugal number, since it uses more digits than its factorization.

1418049649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75314 (or 37657 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The cubic root of 1418049649 is about 1123.4760333665.

The spelling of 1418049649 in words is "one billion, four hundred eighteen million, forty-nine thousand, six hundred forty-nine".