1361550642 has 64 divisors (see below), whose sum is σ = 2929665024. Its totient is φ = 420742080.

The previous prime is 1361550623. The next prime is 1361550647. The reversal of 1361550642 is 2460551631.

It is a super-2 number, since 2×1361550642² = 3707640301461224328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1361550647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2384217 + ... + 2384787.

It is an arithmetic number, because the mean of its divisors is an integer number (45776016).

Almost surely, 2^1361550642 is an apocalyptic number.

1361550642 is an abundant number, since it is smaller than the sum of its proper divisors (1568114382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361550642 is a wasteful number, since it uses less digits than its factorization.

1361550642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1361550642 is about 36899.1956822910. The cubic root of 1361550642 is about 1108.3525711600.

The spelling of 1361550642 in words is "one billion, three hundred sixty-one million, five hundred fifty thousand, six hundred forty-two".