1040155649 has 16 divisors (see below), whose sum is σ = 1135583232. Its totient is φ = 947023488.

The previous prime is 1040155643. The next prime is 1040155709. The reversal of 1040155649 is 9465510401.

It is a cyclic number.

It is not a de Polignac number, because 1040155649 - 2¹⁶ = 1040090113 is a prime.

It is a super-2 number, since 2×1040155649² = 2163847548293222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040155643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288512 + ... + 292094.

It is an arithmetic number, because the mean of its divisors is an integer number (70973952).

Almost surely, 2^1040155649 is an apocalyptic number.

It is an amenable number.

1040155649 is a deficient number, since it is larger than the sum of its proper divisors (95427583).

1040155649 is a wasteful number, since it uses less digits than its factorization.

1040155649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1040155649 is about 32251.4441382088. Note that the first 3 decimals coincide. The cubic root of 1040155649 is about 1013.2099452886.

The spelling of 1040155649 in words is "one billion, forty million, one hundred fifty-five thousand, six hundred forty-nine".