1956255645 has 16 divisors (see below), whose sum is σ = 3132146880. Its totient is φ = 1042623744.

The previous prime is 1956255617. The next prime is 1956255647. The reversal of 1956255645 is 5465526591.

It is not a de Polignac number, because 1956255645 - 2¹⁴ = 1956239261 is a prime.

It is a super-2 number, since 2×1956255645² = 7653872297188732050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1956255594 and 1956255603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956255647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21459 + ... + 66128.

It is an arithmetic number, because the mean of its divisors is an integer number (195759180).

Almost surely, 2^1956255645 is an apocalyptic number.

1956255645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1956255645 is a deficient number, since it is larger than the sum of its proper divisors (1175891235).

1956255645 is a wasteful number, since it uses less digits than its factorization.

1956255645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89084.

The product of its digits is 1620000, while the sum is 48.

The square root of 1956255645 is about 44229.5788471923. The cubic root of 1956255645 is about 1250.6675144095.

The spelling of 1956255645 in words is "one billion, nine hundred fifty-six million, two hundred fifty-five thousand, six hundred forty-five".