1161629813890 has 32 divisors (see below), whose sum is σ = 2573456820480. Its totient is φ = 367636688064.

The previous prime is 1161629813881. The next prime is 1161629813899. The reversal of 1161629813890 is 983189261611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1161629813881) and next prime (1161629813899).

It is not an unprimeable number, because it can be changed into a prime (1161629813899) 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, 638257230 + ... + 638259049.

It is an arithmetic number, because the mean of its divisors is an integer number (80420525640).

Almost surely, 2^{1161629813890} is an apocalyptic number.

1161629813890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161629813890 is an abundant number, since it is smaller than the sum of its proper divisors (1411827006590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161629813890 is a wasteful number, since it uses less digits than its factorization.

1161629813890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276516306.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 1161629813890 in words is "one trillion, one hundred sixty-one billion, six hundred twenty-nine million, eight hundred thirteen thousand, eight hundred ninety".