10157949 has 6 divisors (see below), whose sum is σ = 14672606. Its totient is φ = 6771960.

The previous prime is 10157947. The next prime is 10157977. The reversal of 10157949 is 94975101.

It can be written as a sum of positive squares in only one way, i.e., 8892324 + 1265625 = 2982^2 + 1125^2 .

It is not a de Polignac number, because 10157949 - 2¹ = 10157947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10157941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 564322 + ... + 564339.

Almost surely, 2^10157949 is an apocalyptic number.

It is an amenable number.

10157949 is a deficient number, since it is larger than the sum of its proper divisors (4514657).

10157949 is a wasteful number, since it uses less digits than its factorization.

10157949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128667 (or 1128664 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 10157949 is about 3187.1537458993. The cubic root of 10157949 is about 216.5718514793.

The spelling of 10157949 in words is "ten million, one hundred fifty-seven thousand, nine hundred forty-nine".