1290155061 has 32 divisors (see below), whose sum is σ = 1883895552. Its totient is φ = 780572160.

The previous prime is 1290155059. The next prime is 1290155099. The reversal of 1290155061 is 1605510921.

It is not a de Polignac number, because 1290155061 - 2¹ = 1290155059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290155011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1311976 + ... + 1312958.

It is an arithmetic number, because the mean of its divisors is an integer number (58871736).

Almost surely, 2^1290155061 is an apocalyptic number.

It is an amenable number.

1290155061 is a deficient number, since it is larger than the sum of its proper divisors (593740491).

1290155061 is a wasteful number, since it uses less digits than its factorization.

1290155061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533.

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 1290155061 is about 35918.7285548918. The cubic root of 1290155061 is about 1088.6308486111.

Adding to 1290155061 its reverse (1605510921), we get a palindrome (2895665982).

The spelling of 1290155061 in words is "one billion, two hundred ninety million, one hundred fifty-five thousand, sixty-one".