1340954849 has 16 divisors (see below), whose sum is σ = 1609534080. Its totient is φ = 1103673600.

The previous prime is 1340954833. The next prime is 1340954873. The reversal of 1340954849 is 9484590431.

It is a cyclic number.

It is not a de Polignac number, because 1340954849 - 2⁴ = 1340954833 is a prime.

It is a super-2 number, since 2×1340954849² = 3596319814113225602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340954249) 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, 155477 + ... + 163874.

It is an arithmetic number, because the mean of its divisors is an integer number (100595880).

Almost surely, 2^1340954849 is an apocalyptic number.

1340954849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1340954849 is a deficient number, since it is larger than the sum of its proper divisors (268579231).

1340954849 is a wasteful number, since it uses less digits than its factorization.

1340954849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319400.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 1340954849 is about 36619.0503563378. The cubic root of 1340954849 is about 1102.7355739462.

The spelling of 1340954849 in words is "one billion, three hundred forty million, nine hundred fifty-four thousand, eight hundred forty-nine".