1356145540 has 12 divisors (see below), whose sum is σ = 2847905676. Its totient is φ = 542458208.

The previous prime is 1356145537. The next prime is 1356145541. The reversal of 1356145540 is 455416531.

It can be written as a sum of positive squares in 2 ways, for example, as 759222916 + 596922624 = 27554^2 + 24432^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1356145496 and 1356145505.

It is not an unprimeable number, because it can be changed into a prime (1356145541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33903619 + ... + 33903658.

It is an arithmetic number, because the mean of its divisors is an integer number (237325473).

Almost surely, 2^1356145540 is an apocalyptic number.

1356145540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356145540 is an abundant number, since it is smaller than the sum of its proper divisors (1491760136).

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

1356145540 is a wasteful number, since it uses less digits than its factorization.

1356145540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67807286 (or 67807284 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1356145540 is about 36825.8813879587. The cubic root of 1356145540 is about 1106.8839751240.

It can be divided in two parts, 13561 and 45540, that multiplied together give a triangular number (617567940 = T₃₅₁₄₄).

The spelling of 1356145540 in words is "one billion, three hundred fifty-six million, one hundred forty-five thousand, five hundred forty".