1361272950 has 144 divisors (see below), whose sum is σ = 3761692272. Its totient is φ = 352800000.

The previous prime is 1361272933. The next prime is 1361272951. The reversal of 1361272950 is 592721631.

1361272950 is a `hidden beast` number, since 1 + 361 + 2 + 7 + 295 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361272951) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 2772205 + ... + 2772695.

It is an arithmetic number, because the mean of its divisors is an integer number (26122863).

Almost surely, 2^1361272950 is an apocalyptic number.

1361272950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361272950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880846136).

1361272950 is an abundant number, since it is smaller than the sum of its proper divisors (2400419322).

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

1361272950 is a wasteful number, since it uses less digits than its factorization.

1361272950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1361272950 is about 36895.4326441634. The cubic root of 1361272950 is about 1108.2772155178.

The spelling of 1361272950 in words is "one billion, three hundred sixty-one million, two hundred seventy-two thousand, nine hundred fifty".