1356261146 has 4 divisors (see below), whose sum is σ = 2034391722. Its totient is φ = 678130572.

The previous prime is 1356261131. The next prime is 1356261161. The reversal of 1356261146 is 6411626531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1356261131) and next prime (1356261161).

It can be written as a sum of positive squares in only one way, i.e., 1226050225 + 130210921 = 35015^2 + 11411^2 .

It is a super-2 number, since 2×1356261146² = 3678888592298466632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339065285 + ... + 339065288.

Almost surely, 2^1356261146 is an apocalyptic number.

1356261146 is a deficient number, since it is larger than the sum of its proper divisors (678130576).

1356261146 is an equidigital number, since it uses as much as digits as its factorization.

1356261146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678130575.

The product of its digits is 25920, while the sum is 35.

The square root of 1356261146 is about 36827.4509842862. The cubic root of 1356261146 is about 1106.9154267121.

Adding to 1356261146 its reverse (6411626531), we get a palindrome (7767887677).

The spelling of 1356261146 in words is "one billion, three hundred fifty-six million, two hundred sixty-one thousand, one hundred forty-six".