1396535261 has 8 divisors (see below), whose sum is σ = 1613110464. Its totient is φ = 1194896320.

The previous prime is 1396535243. The next prime is 1396535269. The reversal of 1396535261 is 1625356931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1396535261 - 2⁶ = 1396535197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396535269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733865 + ... + 3734238.

It is an arithmetic number, because the mean of its divisors is an integer number (201638808).

Almost surely, 2^1396535261 is an apocalyptic number.

1396535261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1396535261 is a deficient number, since it is larger than the sum of its proper divisors (216575203).

1396535261 is a wasteful number, since it uses less digits than its factorization.

1396535261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7468131.

The product of its digits is 145800, while the sum is 41.

The square root of 1396535261 is about 37370.2456641644. The cubic root of 1396535261 is about 1117.7653308813.

The spelling of 1396535261 in words is "one billion, three hundred ninety-six million, five hundred thirty-five thousand, two hundred sixty-one".