1081511413 has 8 divisors (see below), whose sum is σ = 1119259800. Its totient is φ = 1043793408.

The previous prime is 1081511411. The next prime is 1081511419. The reversal of 1081511413 is 3141151801.

It can be written as a sum of positive squares in 4 ways, for example, as 114425809 + 967085604 = 10697^2 + 31098^2 .

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 1081511413 - 2¹ = 1081511411 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 (1081511411) 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, 83545 + ... + 95617.

It is an arithmetic number, because the mean of its divisors is an integer number (139907475).

Almost surely, 2^1081511413 is an apocalyptic number.

It is an amenable number.

1081511413 is a deficient number, since it is larger than the sum of its proper divisors (37748387).

1081511413 is a wasteful number, since it uses less digits than its factorization.

1081511413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15191.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 1081511413 is about 32886.3408271580. The cubic root of 1081511413 is about 1026.4639523004.

The spelling of 1081511413 in words is "one billion, eighty-one million, five hundred eleven thousand, four hundred thirteen".