1550349911 has 4 divisors (see below), whose sum is σ = 1691290824. Its totient is φ = 1409409000.

The previous prime is 1550349883. The next prime is 1550349929. The reversal of 1550349911 is 1199430551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1199430551 = 11 ⋅109039141.

It is a cyclic number.

It is not a de Polignac number, because 1550349911 - 2⁶ = 1550349847 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 (1550349961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70470440 + ... + 70470461.

It is an arithmetic number, because the mean of its divisors is an integer number (422822706).

Almost surely, 2^1550349911 is an apocalyptic number.

1550349911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1550349911 is a deficient number, since it is larger than the sum of its proper divisors (140940913).

1550349911 is a wasteful number, since it uses less digits than its factorization.

1550349911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140940912.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 1550349911 is about 39374.4829934312. The cubic root of 1550349911 is about 1157.3816067504.

The spelling of 1550349911 in words is "one billion, five hundred fifty million, three hundred forty-nine thousand, nine hundred eleven".