7544156949 has 24 divisors (see below), whose sum is σ = 12478856000. Its totient is φ = 4302289728.

The previous prime is 7544156927. The next prime is 7544156969. The reversal of 7544156949 is 9496514457.

7544156949 is a `hidden beast` number, since 7 + 544 + 1 + 5 + 6 + 94 + 9 = 666.

It is not a de Polignac number, because 7544156949 - 2¹³ = 7544148757 is a prime.

It is a super-2 number, since 2×7544156949² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7544156895 and 7544156904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7544156969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88552 + ... + 151425.

Almost surely, 2^7544156949 is an apocalyptic number.

It is an amenable number.

7544156949 is a deficient number, since it is larger than the sum of its proper divisors (4934699051).

7544156949 is a wasteful number, since it uses less digits than its factorization.

7544156949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240489 (or 240486 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 7544156949 is about 86857.1064968204. The cubic root of 7544156949 is about 1961.2678307199.

The spelling of 7544156949 in words is "seven billion, five hundred forty-four million, one hundred fifty-six thousand, nine hundred forty-nine".