1954159249 has 12 divisors (see below), whose sum is σ = 2274436800. Its totient is φ = 1674086568.

The previous prime is 1954159223. The next prime is 1954159283. The reversal of 1954159249 is 9429514591.

It is a happy number.

It is not a de Polignac number, because 1954159249 - 2¹³ = 1954151057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954159219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90132 + ... + 109690.

It is an arithmetic number, because the mean of its divisors is an integer number (189536400).

Almost surely, 2^1954159249 is an apocalyptic number.

It is an amenable number.

1954159249 is a deficient number, since it is larger than the sum of its proper divisors (320277551).

1954159249 is a wasteful number, since it uses less digits than its factorization.

1954159249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21612 (or 21605 counting only the distinct ones).

The product of its digits is 583200, while the sum is 49.

The square root of 1954159249 is about 44205.8734672215. The cubic root of 1954159249 is about 1250.2206008526.

The spelling of 1954159249 in words is "one billion, nine hundred fifty-four million, one hundred fifty-nine thousand, two hundred forty-nine".