1340858052 has 18 divisors (see below), whose sum is σ = 3389391278. Its totient is φ = 446952672.

The previous prime is 1340858041. The next prime is 1340858081. The reversal of 1340858052 is 2508580431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1259966016 + 80892036 = 35496^2 + 8994^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1340858052² = 3595800631226469408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 37246057 = 1340858052 / (1 + 3 + 4 + 0 + 8 + 5 + 8 + 0 + 5 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1340857998 and 1340858016.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18622993 + ... + 18623064.

Almost surely, 2^1340858052 is an apocalyptic number.

1340858052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1340858052 is an abundant number, since it is smaller than the sum of its proper divisors (2048533226).

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

1340858052 is a wasteful number, since it uses less digits than its factorization.

1340858052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37246067 (or 37246062 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 1340858052 is about 36617.7286570317. The cubic root of 1340858052 is about 1102.7090396042.

The spelling of 1340858052 in words is "one billion, three hundred forty million, eight hundred fifty-eight thousand, fifty-two".