1511201040 has 40 divisors (see below), whose sum is σ = 4684723968. Its totient is φ = 402986880.

The previous prime is 1511201023. The next prime is 1511201047. The reversal of 1511201040 is 401021151.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1511201047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3148096 + ... + 3148575.

Almost surely, 2^1511201040 is an apocalyptic number.

1511201040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1511201040 is an abundant number, since it is smaller than the sum of its proper divisors (3173522928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1511201040 is a wasteful number, since it uses less digits than its factorization.

1511201040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296687 (or 6296681 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1511201040 is about 38874.1693158838. The cubic root of 1511201040 is about 1147.5565106188.

Adding to 1511201040 its reverse (401021151), we get a palindrome (1912222191).

The spelling of 1511201040 in words is "one billion, five hundred eleven million, two hundred one thousand, forty".