1361670549 has 16 divisors (see below), whose sum is σ = 1924876800. Its totient is φ = 853810416.

The previous prime is 1361670521. The next prime is 1361670599. The reversal of 1361670549 is 9450761631.

It is not a de Polignac number, because 1361670549 - 2⁵ = 1361670517 is a prime.

It is a super-2 number, since 2×1361670549² = 3708293368027922802, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361670549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361670509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78009 + ... + 93854.

It is an arithmetic number, because the mean of its divisors is an integer number (120304800).

Almost surely, 2^1361670549 is an apocalyptic number.

1361670549 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1361670549 is a deficient number, since it is larger than the sum of its proper divisors (563206251).

1361670549 is a wasteful number, since it uses less digits than its factorization.

1361670549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172024.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1361670549 is about 36900.8204380336. The cubic root of 1361670549 is about 1108.3851064489.

The spelling of 1361670549 in words is "one billion, three hundred sixty-one million, six hundred seventy thousand, five hundred forty-nine".