1340771550 has 24 divisors (see below), whose sum is σ = 3325113816. Its totient is φ = 357539040.

The previous prime is 1340771543. The next prime is 1340771557. The reversal of 1340771550 is 551770431.

It is an interprime number because it is at equal distance from previous prime (1340771543) and next prime (1340771557).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340771557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4469089 + ... + 4469388.

It is an arithmetic number, because the mean of its divisors is an integer number (138546409).

Almost surely, 2^1340771550 is an apocalyptic number.

1340771550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340771550 is an abundant number, since it is smaller than the sum of its proper divisors (1984342266).

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

1340771550 is a wasteful number, since it uses less digits than its factorization.

1340771550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8938492 (or 8938487 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 1340771550 is about 36616.5474888062. The cubic root of 1340771550 is about 1102.6853262841.

The spelling of 1340771550 in words is "one billion, three hundred forty million, seven hundred seventy-one thousand, five hundred fifty".