1340977694 has 16 divisors (see below), whose sum is σ = 2398768128. Its totient is φ = 549717432.

The previous prime is 1340977657. The next prime is 1340977699. The reversal of 1340977694 is 4967790431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340977699) 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 7 ways as a sum of consecutive naturals, for example, 2081942 + ... + 2082585.

It is an arithmetic number, because the mean of its divisors is an integer number (149923008).

Almost surely, 2^1340977694 is an apocalyptic number.

1340977694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1340977694 is a deficient number, since it is larger than the sum of its proper divisors (1057790434).

1340977694 is a wasteful number, since it uses less digits than its factorization.

1340977694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164559.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 1340977694 is about 36619.3622828143. The cubic root of 1340977694 is about 1102.7418361136.

The spelling of 1340977694 in words is "one billion, three hundred forty million, nine hundred seventy-seven thousand, six hundred ninety-four".