1011540447 has 64 divisors (see below), whose sum is σ = 1610956800. Its totient is φ = 626123520.

The previous prime is 1011540433. The next prime is 1011540451. The reversal of 1011540447 is 7440451101.

It is not a de Polignac number, because 1011540447 - 2¹⁶ = 1011474911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1011540447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011540547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2756058 + ... + 2756424.

It is an arithmetic number, because the mean of its divisors is an integer number (25171200).

Almost surely, 2^1011540447 is an apocalyptic number.

1011540447 is a deficient number, since it is larger than the sum of its proper divisors (599416353).

1011540447 is a wasteful number, since it uses less digits than its factorization.

1011540447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1011540447 is about 31804.7236586014. The cubic root of 1011540447 is about 1003.8321118273.

Adding to 1011540447 its reverse (7440451101), we get a palindrome (8451991548).

The spelling of 1011540447 in words is "one billion, eleven million, five hundred forty thousand, four hundred forty-seven".